These all link to Amazon.co.uk, if you're in the US just go to Amazon.com and search for the titles. I own all of these books and the ones I would recomend most are 'Easy Marijuana Gardening' and Indoor Marijuana Horticulture' (together).

http://www.amazon.co.uk/exec/obidos/...205712-1635843

http://www.amazon.co.uk/exec/obidos/...205712-1635843

http://www.amazon.co.uk/exec/obidos/...205712-1635843

http://www.amazon.co.uk/exec/obidos/...205712-1635843