Ok, but where would I find something to base on, I'm almost sure I don't need to start from 0, since there is a lot being developed.
For example, I download 3CeAM and look for the code of the renewal mechanics in rAthena, but which source files should I seek for?, I mean, there should be at least which ones are the ones that matter, something that could guide me.
I don't expect to get everything held in a golden plate =S, I'm just looking for guidance, something that requires less time, I don't know if it would be better to use brAthena and re-translate the main NPCs for example (re-translate would be copy & paste the NPCs from rAthena, but I don't know if most of them match =/).