So I have been all self taught. I started really programming in like 7th grade with JS and I have always done JS. I branched off into some other languages like python or ran a private server of a game that was in C# and I was able to copy and paste code and change stuff around just using logic. But I have always felt I was at a level in JS where i just couldnt advance. I feel like there is this wall and on the other side is a whole new world of being able to make so many different programs. And I just cant get to that. Im only 16 yet there is 14 year olds who code twice as good as me. I added some example code of what I did for my AP Exam last year. Im a sophomore in high school. I just have no idea where to go with programming at the moment. I see other code and im just in awe and jelousy because ive done this for years and Im still basically a beginner.
Only so far you can with self-taught, you need to find a project with a group of people Open Source projects are a great source, coordinate with these more experienced programmers and you will learn a lot more. You can do this now or continue self-teaching your self until you reach college in which you will end up being forced to work with people on projects you don't care about.
Really nice website idea though, good job.
A few good sources for expanding your knowledge base, GitHub Open Source, Hacker Rank, Code Wars, there are a lot more you can find.
Final thing is always to remember there will always be someone more knowledgeable and "better" at coding if they are 12 or 50 it is important to better your self not by being jealous or bitter of these people but asking them for help.