From one student to another:

The best advice I can give you is to just build something.

Pick some small annoyance you have and give yourself a strict timeframe and then build. You'll learn best by coding not reading.

Just pick a language, anyone the ones you mentioned are great. Don't worry about which is easiest or has the best guides. Just start and when you get stuck do a Google search for your problem then move on.

Some small ideas to get you started in case you have none: A personal todo list or a comment system for a website

I hope that helps and good luck!