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Y Combinator

Collection of Resources

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Y Combinator
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Overview

Y Combinator (YC), the world's most successful startup accelerator, has funded over 5,000 companies including Airbnb, Dropbox, Stripe, Reddit, DoorDash, Coinbase, and Instacart. Beyond funding startups, YC has built an extraordinary ecosystem of free educational resources available to anyone, anywhere. This comprehensive guide brings together every free learning material, course, video, podcast, essay, and tool that YC offers to the public.

🎓 FREE Online Courses & Programs

1. Startup School

YC's flagship free online course for founders

Startup School is Y Combinator's comprehensive free online program designed to help anyone start a company.

  • Main Website: https://www.startupschool.org/

  • Cost: Completely FREE

  • Duration: ~7 weeks (1-2 hours per week, self-paced)

  • Participants: Over 100,000+ enrolled

  • Certificate: Yes, upon completion

What You Get:

📚 Core Curriculum Video lectures from YC Group Partners covering:

  • How to Get Startup Ideas

  • How to Evaluate Startup Ideas

  • How to Talk to Users

  • How to Pitch Your Startup

  • How to Build Your MVP

  • How to Find Product-Market Fit

  • How to Split Equity Among Co-Founders

  • How to Launch

  • How to Get Your First Customers

  • How to Raise Money

  • How to Apply and Succeed at Y Combinator

🤝 Co-Founder Matching

  • Access to YC Co-Founder Matching platform

  • Over 100,000 matches made

  • Connect with potential co-founders globally

  • Filter by skills, location, interests

💬 Group Office Hours

  • Weekly group sessions with fellow founders

  • Peer feedback and support

  • Accountability check-ins

📊 Progress Tracking

  • Weekly updates on your metrics

  • Track your startup's progress

  • Stay accountable to your goals

🎯 Company Directory

  • Profile your startup

  • Get discovered by investors and users

https://www.startupschool.org/curriculum

2. How to Start a Startup (Stanford Course)

YC's legendary Stanford course - all lectures free online

In 2014, Y Combinator taught a course at Stanford University featuring some of the biggest names in Silicon Valley.

Guest Speakers Include:

  • Sam Altman (OpenAI CEO, former YC President): Ideas, Products, Teams, Execution

  • Peter Thiel (PayPal co-founder): Competition is for Losers

  • Paul Graham (YC co-founder): How to Start a Startup

  • Dustin Moskovitz (Facebook co-founder): Why to Start a Startup

  • Marc Andreessen (a16z): Idea, Product, Team

  • Ben Silbermann (Pinterest): Designing Products People Love

  • Reid Hoffman (LinkedIn): Blitzscaling

  • Marissa Mayer (Yahoo CEO): Product Management

  • And many more...

Topics Covered:

  1. Ideas, Products, Teams, Execution

  2. Team and Execution

  3. Counterintuitive Parts of Startups

  4. Building Product, Talking to Users, Growing

  5. Competition is for Losers

  6. Growth

  7. How to Build Products Users Love

  8. Doing Things That Don't Scale

  9. How to Raise Money

  10. Culture

  11. Hiring and Company Culture

  12. Building for the Enterprise

  13. How to be a Great Founder

  14. How to Operate

  15. How to Manage

  16. How to Run a User Interview

  17. How to Design Hardware Products

  18. Legal and Accounting Basics

  19. Sales and Marketing

  20. Later-Stage Advice

3. Y Combinator Courses on Class Central

100+ free courses aggregated from YC

📚 YC Startup Library

YC's comprehensive repository of startup knowledge

The YC Startup Library is a curated collection of the best startup advice from 15+ years of Y Combinator.

Library Collections Include:

📖 Essays by Paul Graham

A collection of over 200 influential essays by YC co-founder Paul Graham.

Essential Essays:

  • "How to Get Startup Ideas"

  • "Do Things That Don't Scale"

  • "Maker's Schedule, Manager's Schedule"

  • "How to Start a Startup"

  • "The Hardest Lessons for Startups to Learn"

  • "Why Nerds are Unpopular"

  • "Beating the Averages"

  • "Black Swan Farming"

  • "Startup = Growth"

  • "Mean People Fail"

  • "Relentlessly Resourceful"

  • "The 18 Mistakes That Kill Startups"

  • "Schlep Blindness"

  • "Frighteningly Ambitious Startup Ideas"

  • "How to Convince Investors"

  • "Founder Mode" (2024 - viral essay on management)

Topics Covered:

  • Startup strategy

  • Programming and technology

  • Essays on life and philosophy

  • Venture capital insights

  • Product development

  • Team building

🎬 How to Start a Startup Collection

Stanford course lectures organized by topic

🎙️ Lightcone Podcast Archive

All episodes organized and searchable

📹 YC Talks & Events

Conference talks, Demo Days, and special events

🗂️ Topic-Based Collections

  • Fundraising

  • Product Development

  • Growth & Marketing

  • Hiring & Culture

  • Technical Talks

  • Founder Stories

🎧 FREE Podcasts

1. Lightcone Podcast

YC's flagship podcast on tech and startups

A twice-monthly podcast where YC's Garry Tan, Diana Hu, Harj Taggar, and Jared Friedman discuss the newest tech and how it could change the world.

Listen On:

Recent Episodes:

  • "The Truth About Building AI Startups Today"

  • "Building AI Models Faster And Cheaper Than You Think"

  • "Inside The Hard Tech Startups Turning Sci-Fi Into Reality"

  • "Better AI Models, Better Startups"

  • "How San Francisco Became the Center of AI"

  • "What Happened at YC's Latest Batch" (with exclusive batch data)

  • "The Apple Vision Pro Platform"

  • "Jessica Livingston on the Early Days of YC" (YC co-founder)

  • "Dario Amodei on Building Anthropic" (YC alum)

  • "Spenser Skates on Scaling Amplitude"

  • "Ryan Petersen on AI in Logistics"

  • "Why 95% of Enterprise AI Projects Fail"

  • "Contrarian Bets That Worked"

  • "Building Moats in the Age of AI"

Special Series:

  • Live episodes from events

  • Founder interviews (Amplitude, Flexport, PostHog, etc.)

  • AI deep dives

  • Batch analysis

2. The Y Combinator Podcast

Stories from builders and founders

Where builders talk about building - from the earliest days of an idea to scaling a company that changes the world.

  • Founder journeys from zero to scale

  • Product development stories

  • Fundraising experiences

  • Pivots and survival stories

  • YC partner advice

🎥 FREE Videos & YouTube Channel

Y Combinator YouTube Channel

2.1M+ subscribers, 750+ videos, 90M+ views

YC's YouTube channel is a treasure trove of startup wisdom.

Video Series & Collections:

1. Startup School Lectures

Latest talks from YC Group Partners available to everyone:

  • How to Evaluate Startup Ideas (Kevin Hale)

  • How to Get Startup Ideas

  • How to Talk to Users

  • How to Launch Your Startup

  • How to Get Your First Customers

  • How to Find Product-Market Fit

  • How to Apply And Succeed at Y Combinator (Dalton Caldwell)

  • And many more...

Playlist: https://www.youtube.com/playlist?list=PLQ-uHSnFig5MiLRb-l6yiCBGyqfVyVf17 (example)

2. Founder Stories

Interviews with successful YC founders:

  • Airbnb founders

  • Dropbox - Drew Houston

  • DoorDash - Tony Xu

  • Stripe - Patrick and John Collison

  • Reddit - Steve Huffman

  • Coinbase - Brian Armstrong

  • Instacart - Apoorva Mehta

  • And hundreds more...

3. How to Start a Startup Series

Complete Stanford course (20 lectures)

4. Female Founders Conference

Annual conference talks available free:

  • Adora Cheung (Homejoy)

  • Reshma Shetty (Ginkgo Bioworks)

  • Tracy Young (PlanGrid)

  • And many inspiring talks

5. YC Office Hours Series

Watch actual office hours sessions:

  • Dalton Caldwell & Michael Seibel

  • Product development

  • Growth strategies

  • Fundraising advice

6. Technical Talks

  • AI and machine learning

  • Engineering best practices

  • Infrastructure and scaling

  • Developer tools

7. Demo Day Presentations

Selected startups pitching from various batches

8. Work at a Startup

Career advice and startup job hunting

9. Special Events

  • Request for Startups

  • Startup Battlefield

  • YC Expos

  • Regional events

  • "How to Evaluate Startup Ideas" - Kevin Hale

  • "How to Get Startup Ideas" - Jared Friedman

  • "The Truth About Y Combinator"

  • "Building Product, Talking to Users, and Growing" - Adora Cheung

  • "Do Things That Don't Scale" - Various

  • "How to Start a Startup" lecture series

📝 Essays & Written Content

Paul Graham's Essays

200+ influential essays on startups and life

Paul Graham, YC co-founder, has written extensively on startups, programming, and philosophy.

Most Influential Essays:

On Startups:

  • "How to Start a Startup" (2005)

  • "Do Things That Don't Scale" (2013)

  • "Startup = Growth" (2012)

  • "The 18 Mistakes That Kill Startups" (2006)

  • "How to Get Startup Ideas" (2012)

  • "Black Swan Farming" (2012)

  • "Relentlessly Resourceful" (2009)

  • "Schlep Blindness" (2012)

  • "Mean People Fail" (2014)

  • "Founder Mode" (2024)

On Product & Strategy:

  • "Make Something People Want" (2006)

  • "The Only Way to Learn" (2007)

  • "Frighteningly Ambitious Startup Ideas" (2012)

  • "Default Alive or Default Dead" (2015)

On Funding:

  • "How to Convince Investors" (2013)

  • "Investor Herd Dynamics" (2013)

  • "How to Fund a Startup" (2005)

On Culture & Philosophy:

  • "Maker's Schedule, Manager's Schedule" (2009)

  • "Why Nerds are Unpopular" (2003)

  • "Keep Your Identity Small" (2009)

  • "Life is Short" (2016)

  • "How to Disagree" (2008)

On Programming:

  • "Beating the Averages" (2001) - Introduces "Blub Paradox"

  • "The Hundred-Year Language" (2003)

  • "Hackers and Painters" (2003)

YC Blog

Regular updates from YC partners and team

Official Y Combinator blog with company news, batch announcements, and thought leadership.

Categories:

  • Admissions

  • Advice

  • Biotech

  • Blockchain

  • Essays

  • Female Founders

  • Founder Stories

  • Interviews

  • Startup School

  • Work at a Startup

  • YC Events

Recent Posts Include:

  • Batch announcements

  • Application deadlines

  • New initiatives

  • Founder spotlights

  • Industry analyses

  • YC program updates

🗞️ Hacker News

YC's community forum - Free for everyone

Hacker News is a social news website focusing on computer science and entrepreneurship, run by Y Combinator.

  • Website: https://news.ycombinator.com/

  • Created: 2007 by Paul Graham

  • Focus: "Anything that gratifies one's intellectual curiosity"

  • Community: Millions of users worldwide

Features:

📰 Content Types:

  • Tech news and analysis

  • Startup stories

  • Scientific discoveries

  • Programming discussions

  • Entrepreneurship insights

💬 Special Formats:

  • Show HN: Share projects you've built

  • Ask HN: Ask the community questions

  • Tell HN: Share information or insights

  • Launch HN: Announce your product launch

🔗 Resources:

  • Daily top stories

  • Active comment discussions

  • Job board (Who's Hiring monthly threads)

  • Network with tech community

🏆 Karma System:

  • Earn karma through quality contributions

  • Unlock features (downvoting, flagging)

  • Build reputation

Access:

  • Main Site: news.ycombinator.com

  • API: Available for developers

  • Mobile Apps: Third-party apps available (official mobile web)

  • RSS Feeds: Available

  • Twitter Bot: @newsycombinator

📧 FREE Newsletters

YC Newsletter

Weekly updates from Y Combinator

Stay up to date with YC news, batch updates, and opportunities.

🛠️ FREE Tools & Resources

1. Co-Founder Matching

World's largest co-founder matching platform

  • Platform: Part of Startup School

  • Link: https://www.startupschool.org/

  • Matches Made: 100,000+

  • Cost: FREE

  • Features:

    • Profile creation

    • Search filters (skills, location, interests)

    • Direct messaging

    • Background verification

    • Success stories

2. Work at a Startup

Job board for YC companies

Find opportunities at Y Combinator-funded startups.

  • Link: https://www.workatstartup.com/

  • Jobs: Thousands of positions

  • Companies: 1,000+ YC startups

  • Roles: Engineering, product, sales, marketing, operations

  • Cost: FREE for job seekers

Features:

  • Browse by role, location, company stage

  • Direct applications

  • Startup profiles

  • Salary ranges (some listings)

  • Remote opportunities

3. YC Application Resources

Free guides for applying to Y Combinator

YC provides extensive free resources for applicants:

Application Guides:

  • How to fill out the application

  • Video guidelines

  • Common mistakes to avoid

  • Interview preparation

Video Requirements:

Application Tips:

  • Clarity and concision

  • Show traction

  • Explain the problem

  • Demonstrate commitment

4. Bookface (For YC Alumni)

Internal network for YC founders

While not public, worth mentioning as a benefit of joining YC:

  • Private social network

  • Connect with 5,000+ founders

  • Ask questions

  • Share resources

  • Get introductions

📊 FREE Data & Reports

YC Company Database

Browse all YC companies

Search Filters:

  • Batch (W24, S23, etc.)

  • Industry (B2B, Consumer, Healthcare, etc.)

  • Company size

  • Region

  • Status (Active, Acquired, Public)

Company Information:

  • One-liner description

  • Founded date

  • Founder names

  • Location

  • Team size

  • Total raised

  • Links to company website, jobs, social media

Top Companies List

YC's most valuable companies

Publicly available information about YC's biggest successes:

  • Airbnb

  • Stripe

  • Coinbase

  • DoorDash

  • Instacart

  • Dropbox

  • Reddit

  • Twitch

  • And hundreds more

Combined Valuation: $600B+ (as of 2024)

🎯 Specialized Free Resources

1. Request for Startups (RFS)

YC's list of startup ideas they want to see

YC periodically publishes areas where they'd like to see startups built.

  • Published: On YC blog

  • Topics: Varies (AI, biotech, climate, etc.)

  • Purpose: Inspire founders with high-potential ideas

Past RFS Topics:

  • New cities

  • Government 2.0

  • AI-powered tools

  • Climate tech

  • Healthcare innovation

  • Education technology

  • Financial infrastructure

2. YC Library Video Courses

Curated playlists on specific topics

Free video collections on:

  • Fundraising masterclass

  • Product development

  • Growth strategies

  • Building teams

  • Marketing & sales

  • Technical infrastructure

3. Female Founders Resources

Special content for women entrepreneurs

  • Female Founders Conference videos

  • Women founder stories

  • Community connections

  • Mentorship opportunities

4. AI Startup Resources

Latest content on building AI companies

Given the AI boom, YC has created extensive free resources:

  • Lightcone episodes on AI

  • Startup School AI lectures

  • Founder interviews (Anthropic, Scale AI, etc.)

  • Technical talks on ML/AI

🌍 Regional Resources

YC Fellowship

While the main YC program requires relocation to SF, resources are globally accessible:

  • Online Startup School (global)

  • Virtual events

  • Remote-friendly content

  • International founder stories

📱 Social Media & Community

Follow YC On:

Twitter/X: @ycombinator

  • Batch announcements

  • Funding news

  • Content shares

  • Community highlights

LinkedIn: Y Combinator

  • Professional updates

  • Job opportunities

  • Founder stories

Instagram: @ycombinator

  • Behind-the-scenes content

  • Founder spotlights

  • Event photos

Facebook: Y Combinator

  • Community updates

🎓 How to Maximize YC's Free Resources

For Aspiring Founders (Pre-Idea):

  1. Start: Read Paul Graham's "How to Get Startup Ideas"

  2. Watch: Startup School curriculum (7 weeks)

  3. Join: Co-Founder Matching if you need a co-founder

  4. Listen: Lightcone Podcast for current trends

  5. Browse: YC companies for inspiration

  6. Read: Hacker News daily

For Early-Stage Founders (Have Idea):

  1. Enroll: Startup School for structured learning

  2. Watch: "How to Evaluate Startup Ideas" (Kevin Hale)

  3. Study: "Do Things That Don't Scale" essay

  4. Track: Weekly progress in Startup School

  5. Apply: To Y Combinator when ready

  6. Use: Application resources and video guide

For Growing Startups:

  1. Watch: How to Start a Startup (Stanford) - later lectures

  2. Listen: Y Combinator Podcast - founder stories

  3. Read: Essays on scaling, hiring, culture

  4. Browse: Work at a Startup for hiring

  5. Study: Successful YC company journeys

For Tech Professionals:

  1. Read: Hacker News for industry news

  2. Listen: Lightcone for AI/tech trends

  3. Watch: Technical talks on YouTube

  4. Browse: Work at a Startup for jobs

  5. Engage: HN discussions

For Investors & Advisors:

  1. Browse: YC company database

  2. Watch: Pitch techniques and Demo Days

  3. Read: Paul Graham essays on investing

  4. Follow: Batch announcements

  5. Study: Success patterns

🌟 Why YC's Free Resources are Exceptional

1. Practitioner Knowledge

Not academic theory - advice from people building billion-dollar companies.

2. Completely Free

Zero cost, no credit card, no paywall. True democratization of startup knowledge.

3. Continuously Updated

New content weekly. Always current with latest trends (especially AI).

4. Proven Results

Advice that has created $600B+ in company value.

5. Community-Driven

Hacker News, co-founder matching, office hours - built-in community.

6. Comprehensive Coverage

From idea to IPO - every stage covered.

7. Multi-Format Learning

Videos, essays, podcasts, courses - learn your way.

8. Direct Access

Learn from the actual people funding and advising startups.

📊 YC by the Numbers

  • Founded: 2005

  • Companies Funded: 5,000+

  • Combined Valuation: $600B+

  • Unicorns Created: 100+

  • Countries Represented: 100+

  • Free Videos: 750+

  • YouTube Subscribers: 2.1M+

  • Startup School Participants: 100,000+

  • Co-Founder Matches: 100,000+

  • Paul Graham Essays: 200+

  • Podcast Episodes: 100+

ResourceLink
Startup Schoolstartupschool.org
YC Libraryycombinator.com/library
YouTube Channelyoutube.com/@ycombinator
Lightcone PodcastApple
YC PodcastApple Podcasts
Paul Graham Essayspaulgraham.com/articles.html
Hacker Newsnews.ycombinator.com
YC Blogycombinator.com/blog
Work at a Startupworkatstartup.com
Company Directoryycombinator.com/companies
Newsletter Signupycombinator.com/subscribe
Application Video Guideycombinator.com/video
How to Start a StartupYC Library

🎯 Special Mentions

Jessica Livingston

YC co-founder, author of "Founders at Work" - featured in podcasts and essays

Sam Altman

Former YC President (2014-2019), now OpenAI CEO - extensive content in library

Garry Tan

Current YC CEO - hosts Lightcone Podcast, active on social media

Michael Seibel

YC Group Partner & CEO - Office Hours series, Startup School instructor

Dalton Caldwell

YC Group Partner & Managing Director - Application guides, Office Hours

💬 Community Quotes

"YC's free resources are better than most paid startup courses." - HN user

"Startup School changed how I think about building products." - SS participant

"Paul Graham's essays are required reading for any founder." - Multiple VCs

📖 Additional Reading

  • "The Mom Test" - Rob Fitzpatrick (on talking to users)

  • "Founders at Work" - Jessica Livingston

  • "Zero to One" - Peter Thiel

  • "The Hard Thing About Hard Things" - Ben Horowitz

  • "Hackers & Painters" - Paul Graham

Note: While books aren't free, many concepts are covered in free YC content.

Y Combinator has built the world's most comprehensive free startup education platform. From Startup School to Paul Graham's essays, from the Lightcone Podcast to Hacker News, YC offers everything an aspiring founder needs to learn how to build a successful company - completely free.

What Makes This Extraordinary:

✅ Zero Cost: Everything is free - no hidden fees, no upsells ✅ World-Class Quality: Advice from people who've built $600B+ in value ✅ Comprehensive: Covers every aspect of starting and scaling ✅ Always Current: Updated weekly with latest trends ✅ Community-Driven: Built-in network through Hacker News and Startup School ✅ Proven Results: Same advice given to Airbnb, Stripe, Coinbase, etc. ✅ Globally Accessible: Available to anyone, anywhere ✅ Multiple Formats: Learn through videos, essays, podcasts, or courses

Last Updated: February 2026
All resources listed are freely accessible to the public at the time of publication.

📌 Final Notes

Why YC Shares So Much for Free:

  1. Mission: "Make something people want" - democratizing startup knowledge

  2. Deal Flow: More educated founders = better applicants

  3. Community: Building the global startup ecosystem

  4. Legacy: Paul Graham's vision of open knowledge sharing

  5. Network Effects: Stronger ecosystem benefits everyone

What You Won't Find (But Might Want):

  • YC Batch Access: Only for accepted companies

  • Bookface: Private network for YC alumni

  • Weekly Dinners: In-person for batch companies

  • Individual Office Hours: For batch companies only

  • Demo Day Access: Invite-only for investors

But honestly? The free resources give you 90% of what you need.

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