Volume 1, Who Needs Ruby? is a pragmatic, succinct guide to improving your efficiency and the cleanness of your code. Attractive to amateurs and professionals alike, The CodeIgniter Handbook isn't your usual programming book. It's short, useful and easy to read, and covers how to improve the quality of your code and the speed of your development time.
It's available to buy as a print book or an eBook. It's also much cheaper than most programming books, at only £12 (roughly $18) for the print book and £6 ($10) for the eBook.
I've had some great feedback already -- everyone appears to be enjoying it! Thanks for your support.