Hello there Jogz,
I have here a very trusty friend named ' google ' and you can ask him anything by clicking this: https://www.google.com/
That friend of mine helped me alot and because of him, i learned how to make RO, how to script and do source codes as well, not only that google also helps me with my projects and school home works.
So yeah, better ask him " How to make ragnarok private server rathena " and " How to script rathena ", trust me he'll give you alot of helpful answers!
Good luck!
P.S
I gave you a helpful troll lol