Learning a particular programming language is no where near as important as learning the basics of programming.
For example, learn some of the basic programming structures like:
- Sequential code
- Subroutine
- GoTo or Jump
- If-then-else
- Case
- Do While-Do Until
Learn how to define a problem through reiterative decomposition, a fancy way of saying: break down a problem into smaller components until you can solve it
Learn good programming practices like code reuse, code refactoring, encapsulation. There is a lot of good practices in the object oriented realm to help you write good reusable code.
Know your problem domain. If you are writing code for robots, you need to know different things than if you are writing code for an accounting system. I have yet to use the concept of debits and credits when writing for our robot, and never once needed to filter the noise out of a potentiometer for a AR Aging report ;>
So focus more on the fundamentals of programming, after that, picking a language is usually driven by the environment you are working in, or what you have available at the time. But if you know the fundamentals, it doesn't really matter much which language you end up in.