Startup School - How to start a startup, by Y Combinator
Freelancer Stack - Curated directory of tools used by 10,000+ freelancers
On Deck - Business Loans | Small Business Funding | OnDeck
Folyo - Find great, hand-picked freelance designers.
Founder Secrets - Practical advice from the world's best startup founders
Lambda School - A full Computer Science education - free until you get a job