Four Hour Book Club - 300+ Books recommended on the Tim Ferriss Show 📚
Goodreads - See what your friends are reading.
Reese’s Book Club - Every book, everyone’s invited
LibraryThing - A home for your books.
Bookshare - I'm giving away my books
BookAuthority - BookAuthority collects the most recommended books on business, technology and science - as featured on CNN, Inc and Forbes