4eBooks has a huge collection of computer programming ebooks. Each downloadable ebook has a short review with a description.
www.mangosweetie.com is a good ebook website.
I really like it. it contains more than 20000 ebooks with cooperation of many authors
bookboon.com is good website to download free ebooks without any registeration process you can easily download ebooks and textbooks.
Legit sources?
Some 10,000 how to books and courses of all kinds, normally marketed by some 100,000 affiliates can be found in the Marketplace link at Clickbank.com
