12 Photoshop tutorials for beginners
Photoshop is a world. I have always said, although it sounds strange, it is THE PROGRAM.
In fact, I think it is too big to cover in its entirely. You have to use it for what you need, finding its limits, investigating. But without obsessing.
This compilation of 12 tutorials by Jacob Gube, can be a good start. They serve to get an idea of the potential of the application and overcome a little fear.