I've spoken about Photoshop over the years. Now you can get some of that information here.

Tutorial 1: Read me first
A few words about monitors, embedded profiles,
color conversions, and other areas related to color.

Tutorial 2: Photoshop's Channels

Tutorial 3: Photoshop's Pen Tools
Let's create clipping paths.

Tutorial 4: Retouching the Unclonable
Paint away big problems.

Tutorial 5: Photoshop in 5 Minutes
A quick guide that shows the basics of Photoshop,
and some popular key-commands.

If you were helped by the information here, let me know. I'd love to hear from you.