Bookstash - Bookstash is a free library of curated summaries from top nonfiction books.
Bookshare - I'm giving away my books
Book Video Club - Quick video summaries of the top business books for startups
Four Hour Book Club - 300+ Books recommended on the Tim Ferriss Show 📚
Instaread - Read or hear key takeaways of any book in minutes
Shufflebook - Exchange used books locally