I am thinking buying this book for my kindle Exercising The Penis: How To Make Your Most Prized Organ Bigger, Harder & Healthier [Kindle Edition]Amazon.com: Exercising The Penis: How To Make Your Most Prized Organ Bigger, Harder & Healthier eBook: Aaron Kemmer, Richard Howard II, Deby Cassill: Kindle Store
Pretty much talks all about the same things on here, Thunderplace, MatterOfSize, PEgym or any other PE websites. But go for it why not. You might find some interesting routines and exercises in the book.
If you like a book format, it is a good source of the basic PE info. You can find the same information at Thunder's Place of PE Gym and other forums, but it might take more work on your part.