Hi, welcome to this Blog!!!, Here you can find Ragnarök Online Server guide- e-Athena basis.
Well here are more Links which will really help you:-

1) Nikunj Mehta's eAthena server files [scripts & server accessories]:

Server Files

2) Feeling Sick due to the bot problems?? well if so go to the main bot page:
Find Bot source and their formats

Still more links to come ahead and even more guide, so hold-on.