Bookicious - Find the best new book to read with books collections for makers, founders and entrepreneurs.
Zero to Sold - How to start, run, and sell a bootstrapped business
Goodreads - See what your friends are reading.
Single Founder Handbook - A step-by-step guide for bootstrapped software entrepreneurs
Bookcelerator - A curated directory of books that will make you smarter
Founder Society - An invitation-only organization of entrepreneurs