This is exactly what I need right now. What this challenge is about is that you can only pick books that have been lying around and you have been meaning to pick them up and never really did or the ones you've already ordered. You shouldn't go out of your way to buy a book for this challenge. And we're only to complete 6 challenges and each book can fulfill more than one!
So I have in total of 4 books that I want to read for this challenge!