The problem with Photoshop, and the rest of the Adobe design suite, is that they overload you with options.
What you can do with Photoshop is edit your digital photos or images, almost
everything about them.
Things you can do:
-Resize, stretch, skew, shear, or crop (and any other shaping tool)
-Change filetype and file quality (email quality, or work portfolio?)
-Adjust color balance ("tint" knob on your TV, but very advanced)
-Apply photographic effects (graininess, lens flares, flash placement)
-Modify the image (repaint, remove, add, or move things, people, etc)
-Do stupid stuff (want flames? neon lights? fake cubism? ok, shoot)
-Melt inches off your waist, drop those baggy eyes, lift that saggy smile
-Almost anything else you can imagine ever doing with a picture
Most of the things that people
really do with Photoshop are subtle, but you can do some crazy stuff. For an example of the types of crazy, creative, cool things that you could learn to do, go to
www.worth1000.com and take a look around.