I am not fan of the Python but I recommend you stick to Python for your first steps. It has very good community lots of tutorials, books, etc and lots of packages. It is in general a good language for people that are new to programming. After you master Python you may pick other language.

I'd recommend JavaScript unless you want to do something that python is specifically good for like machine learning. JavaScript has its own issues but it's not hard to learn and is used everywhere.

Julia is pretty great and has significantly saner package management.