I really have wanted to learn to play slide guitar for a while and was wondering if anyone has any good recommendations on good 'How to play slide guitar' books?

My gear:

Gibson Les Paul Custom
Gibson Les Paul Studio
PRS McCarty 10 Top
JCM900 Head and 1960B
Dunlop Crybaby 535Q
Korg Pitchblack
Small Clone
Boss GE-7

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if you look at the lessons on gibson.com, im pretty sure its gibsons site that has a really nice slide lesson kinda thing, but just start playin with a slide after learning the basics, then well its really just kinda gettin experience with it