In reply to Kevin (north east & spain):
Video tutorials and tinterweb have taught me way more than the few very dull books I have read on photoshop.
Good places to start would be....
http://www.radiantvista.com/
(tutorials on photoshop work, mainly for landscapes, but other stuff too, and some of his daily critiques are good as well)
http://www.luminous-landscape.com/tutorials/blended_exposures.shtml
(Good all round photography website....and a good technique too)
Personally, I don't think photoshop is that hard when you understand how to make things happen. One of the most important tools for photography is Layers, and if you can watch through most of the RadiantVista tutorials and Daily Critiques, I think you'll have a pretty good idea on how to operate most of the useful stuff.
And quickly for all the people building a rage that I could be so arrogant as to dismiss books......the reason I don't like books is a lot of the time they explain a technique well, but they are weak when it comes to showing how they could be applied. Whereas tutorials on the internet often have a purpose behind them...or at the least are focused on achieving an aim, rather than explaining a technique for purely understandings sake.In short its easier to understand why you'd want to use layers, rather than just how to use them.
That said I have not read Photoshop for Photographers, and have no illusions that in many areas, my photoshop skills are completely useless. Maybe try some stuff on the web first, and if you get nowhere, or exceed its skillbase, have a look at that book, as it seems highly recommended.
