Hi Romeda

There are quite a few good books available but because Photoshop is used differently for different reasons by different artist, you'll definately get differing opinions ;)

If i recall correctly you wanted to make some graphics for your website and maybe branch into logos and small designs. Will you be looking to increase your skill set to include Photomanipulation?
Or color correction for Digital Photographs?

I guess starting out i'd recommend the WOW series by Jack Davis. It covers a broad range of capabilities within PS, and shows you how rather nicely...

I wouldn't bother with the "24HR" or "Dummies Guide" as they pretty much rehash the manual (just in a simplier manner).

I, myself always grab my "bible" off the shelf when i'm trying to remember something (but it's rather dull... actually it's just not as flashy as WOW but a darn good book!)

...more to come,
:)
retrocity