jceca, if you have it at home its quite easy. I had no idea on how to use it, but with alot of play I found out how to do stuff on there. Sometimes I find the best way to learn is to just play with it and then you discover as you go along and there are pleanty of great PHOTOSHOP TUTORIALS to help you. Im always refering to them.
Here check these out
http://www.entheosweb.com/photoshop/default.asp http://www.photoshopcafe.com/tutorials.htm http://www.freephotoshopzone.com/index.html and there's always the photoshop C:\Program Files\Adobe\Adobe Photoshop CS\Help\help.html
Check these out.....hope they help get you started. :) x