Google "ycombinator application". Excluding YCombinator itself, my guide for applying is the top hit. I have coached several teams over the past 3 years into getting an interview and accepted into YCombinator.

Obviously, I can't guarantee that every team will get in, but I can help the right teams (smart, passionate hackers) express themselves to maximize their chances. I understand precisely what he is looking for in a founder. Having taught several teams, including myself, to write the application, I have learned exactly how to express your best qualities.

The first time I applied, I did not know how to present myself. I did not get in. Since then, I have learned to do so through myself and also through helping others. I want to help other applicants avoid the same mistakes I did.

Also, I just love to talk to smart entrepreneurs about startup ideas.