Amazon has blown open the digital book world by introducing their Kindle book lending program. If you were looking for a way to reduce your reading budget you just may have found it. The program has lots of features and you do not even have to have a Kindle book reader to participate. The Kindle works on phones such as the I-phone, Blackberry and all Android devices. You have to use those phones Kindle App which is free to read your material. If you have a Kindle, of course you can use that. You can also use a personal computer, an I-pad or a Mac.