How to become a plugin developer?
hi, is there like a list of links and  youtube that i can watch?

i'm currently managing a server and I was thinking I can develop my own stuff and share here. 
You can look at other people's plugins and learn from those, you can decompile the game assemblies to have a look at some of the game code and there are a few basic videos on youtube.

Edit: Having a reasonable understanding of C# helps too.
is there like a list of "cook book" codes I can look at and maybe a reference api for what's in the game that i can play around with? I've done some basic C# before but most of my training is java and experience is in python