If you have a Kindle or e-reader you can find a lot and especially if you like to read the classics (most are part of public domain and are free). You don't have to buy an expensive e-reader if you don't need color and all the bells and whistles which go with the more advanced ones. Although the cheapest Kindle at the moment is around $80, look out for sales and consider signing up for Amazon's credit card with an immediate $50 credit. (I purchased my Kindle this way and ended up paying only $7). You can also download books to your phone.
- Friends of the Library - They often sell books for as little as 10cents
- Amazon Kindle - Search for free books (select the category you want)
- E-Book Junkie - I haven't used this but there are lots of free books on the site
- Paperback Swap - Your only cost is postage when someone orders a book from you. When you choose someone else's book it's free.
- Yard sales - I've found books rarely sell well so often you can bargain, especially if you're buying a few
- Charity shops - Goodwill and Salvation Army usually have a few shelves of books
- Half Price Books - Take your old books in and use whatever you get for them (it won't be much) toward a "new" book.
- Little libraries - These are sprouting up in neighborhoods so look out for them. You take a book and leave a book.