First Programming Language

I've dabbled in programming before but I want to get back into it. I was thinking Python, Ruby or Perl, but I can't decide which to start programming in. And then when I start learning a language, what kind of programs should I make? That's always been my big problem, not having any ideas to program.

>>6
What's a good place (few pks, few fellow farmers) to farm maths and physics experience?