Google Book Search is a very useful tool for finding books according to keyword search. The Google database contains a massive library of scanned books. You can also use Google Book Search to find and download books in the public domain.
When we were reviewing 10 of the best online resources for free books, we had a LOT of readers chime in with their own favorites as well. Thank you for all your helpful contributions! In fact, we had so many suggestions, we have enough to compile a huge list fro...