looking for literature on hydro

hey I've recently been doing some heavy research on hydroponics and growing cannabis and there is only so much detail provided online with out resorting to good ol books. I wanted know a good book or even dvd on the subject matter. (good in terms of informative as well a

sorry~ as well as reader friendly) any info would be appreciated. thanks.

also i wanted to buy some seeds off the internet but many websites dont offer very much security as far as shipping since i am in the united states. only buydutchseeds is making me feel safe on the matter. whats the best way to go. thanks