Honestly 420 is right, he's not just saying that because it's his website. The knowledge that is organized in that section is superb and very comparable if not better then getting a book.
Combined with the interactivity you get here, it's unbeatable.
The info on this site is reliable, up to date, and practical. Plus the good-hearted people can't be beat. It's truly a community, and a lot of fun. Good growing!
try bing search on medical cannabis cultivation books. search engine on here is pretty useful too has many links that will help guide you. Right hand top corner under flashing ads! Hit it up.