Some other stuff that will help
- Navigating/manipulating files and folders on your computer
- Beginning C# (classes, methods, properties, inheritance) (google "C# beginner tutorial" or something like that, there's a billion of them)
- Get visual studio community edition or some sort of editing environment with syntax highlighting and stuff
- explore the scripts and server code. Anything that interests you, just search for it in the project, and read the code (once you know the basics). You'll learn a lot about how things work just poking around.