java – What to do after a few years of programming experience?

From a young age (12/13 years) I have been programming and teaching myself new things in different languages (mainly Java). I came up with all the projects I did by myself because I had no one in real life to teach or inspire me in programming. These projects were mostly very simple games and little programs. I never did like a really big project and after a few years I got bored by coming up with projects for myself and mostly quit programming.

I have done a lot of music production since and really like this. But now that I am 18 I sometimes would like to program again. However I don’t know where to start or what to program nor what language to use. I am also interested in things like Node.js and how big projects are organized and automated with GitHub and Maven/Gradle.

Do you guys have any suggestions on what is popular these days in the programming world? And what is interesting to learn or which projects to help with? Any suggestions are welcome.

Thanks in advance,