[Meatex]

I hear that Java is best to learn first but C++ is still standard in a lot of areas
There are plenty of books on the languages, I got one for C++ written by the guy who made the language

As for photoshop I reckon best thing to do is watch a basic introduction then just try things out. If you want to achieve something specific ask someone with experience. Otherwise you tend to end up losing some of the creativeness learning everything from tutorials