I'm a Photoshop user. It's my tool of choice for all my imaging needs. I pop into Photoshop at least once every day and I'm pretty good at it, but I know there's still a great deal to learn.
There's a series of Photoshop tutorials on YouTube that absolutely rock. They're not only educational, they're hilarious. Heck, even if you don't use Photoshop I'd recommend them.
Here's episode #4.
Here are the previous chapters:
