I want to learn programming

I would like to learn programming but haven’t been able to get started. Advice appreciated, both high-level (you should try learing language X) and low level (you can find a program that will run language X here), the latter has been a particular problem for me, I don’t really know how this sort of thing works.

I am currently studying maths and physics, and I have a particular talent for the former, so I would probably do well with a language that plays to that strength. My only actual experience with programming was when my father let me play around with Jython a bit when I was about 13, I had some fun calculating prime numbers and approximating pi but never got any farther.

Thanks in advance for all suggestions.