Bruce,
There are a ton of free tutorials for Photoshop out there. You just need to search for them. jimmyd started a thread under the "Post Production" forum that discusses plugins and (I think) also covers tutorials. If you like the quicktime type presentation, check out this site:
http://www.russellbrown.com/tips_tech.html I have used some of his techniques (like the "Ligts, Camera, Layers" one) on some pictures. His presentation technique is a little .... ummm ... bizare (corny?), but his techniques are good.
Good luck!
Earl