Here are a few Free Kindle eBooks right now. Keep in mind that prices flip fast so be sure they state Free or $0.00 before buying:
Remember that you don’t need a Kindle to read these as you can download an App for an iPhone, iTouch, iPad, Blackberry, Droid, PC, Mac, etc.
You can also check out the Top 100 Free Kindle eBooks to see if there are other books that interest you. Also, check under the book that you buy for “Customers Also Bought This” as I’ve sometimes find more free books that way.