Basicly relying on something as someone explaining you how to add npcs, items and such is not the key to learn a programming language. You should instead google some tutorials, do not search for hard stuff yet. Try some basic tutorials as;
- Understanding definitions and how to define yourself.
- Try to google some code snippets, codes or snippets you dont understand.
- Do some practicing on the net, I'm sure you can find some exercises.
Hope this will help your way through.