Lua Advice?

I have also recently started a server. But I had no knowledge what-so-ever or LUA scripting.

From looking around the files and editing whats needed, I have a basic understanding of what I am doing - but not to the point I could create a script for myself. My main advice - is to save a copy of any lua BEFORE you change it. So if you make a mistake - you can go back to before. I made this mistake one to many server crashing times, lol.