I'm working on a book to help people with some technical background understand how Bitcoin works. It organizes a lot of the technical information from the Bitcoin wiki and other sources to provide an introduction that covers all the main concepts. I'm posting a draft of the book for a limited time on my website so that anyone who is interested can read it and/or make suggestions.

If you have any feedback, please send it to bitcoinbook@rampantlogic.com, thanks!

Here is the link: http://rampantlogic.com/bitcoin.pdf