I disagree. There are a lot of things in PS that seem quite simple to do, and may even produce somewhat acceptable results. Yet until you really master the program, it's almost always the case that there are much better and more efficient techniques that you probably wouldn't discover on your own. Especially when you get into more advanced work, particularly with masking in whatever form, there are a lot of techniques I've developed for my own use that I probably would never have come up with if I hadn't spent a lot of time learning other advanced techniques, which I in turn probably wouldn't have been able to teach myself very well.