Photoshop is quick to learn but most people will never master it.
I've been using it daily since version 4...and felt proficient in it very quickly...but I am still discovering new features.
very true, I keep discovering new things and probably only know a fraction of it, even so I love it.
I was lucky in that a retired (and immensely intelligent) friend started learning to use it just before me - she would pass on info and I would pick up other stuff and feed it back to her.
Later I taught it to a photographer friend - we had meetings with a photographer friend of hers as well, who used it regularly - and with me coming up with the art based stuff and him coming up with ruby masks and photography based stuff, we all learnt a great deal,