What books or resources would you recommend for someone who's interested in taking up art photography as a hobby?

I’m looking to start taking photography up as a hobby. I have a friend who is a photographer and has his own gallery, even. Obviously, he’ll be a great resource. But I like having references I can go back to, re-read, etc.

I’d also be interested in using Photoshop for processing the photos.

I just purchased, in conjunction with this new hobby, a Lumex 12megapixel with a UV lens, based on my friend’s recommendations.

What recommendations would you offer?