Want to develop software! :P

Heyyyyyy guys, so I'm not sure on how to proceed with this, but I want to start developing software, but I'm unsure where to start. I know a couple programming languages so far, HTML, CSS, Javascript, PHP, Java, JQuery. I've dabbled with C++ a bit while I was in college, wasn't too hard to understand, but I haven't really gotten into using it that much, so I can't really say I'm an expert. But enough about what I know, I'm trying to learn to develop software, and from there I want to learn how to use that knowledge to create automated software for MMO's. Anything links to documentation, or other posts with helpful information would be appreciated. Thanks

I really liked this course.
https://www.freecodecamp.com

More web development but still think its a great course further on with some real world projects you can contribute to