Two classic books that are fast reads and will also help you are 1) The Launchpad (about YC) and 2) The Lean Startup. Both are old books but they cover many of the same concepts and ways of thinking.
I’d add that if you do nothing else, read the first 3 chapters of The Mom Test; it provides a great overview for evaluating ideas.
I’d add that if you do nothing else, read the first 3 chapters of The Mom Test; it provides a great overview for evaluating ideas.