Startup School - How to start a startup, by Y Combinator
CodeMyUI - Handpicked code snippets you can use in your web projects
The Y Combinator Database - The definitive database of YC companies with all the metrics
Codespace - A beautiful cross-platform code snippet manager
Apply to YC (Y Combinator) - Curated collection of resources for founders applying to YC.
Creative Tim - Awesome Bootstrap freebies and templates to build better websites