Um, Hello

[Plant]

Welcome to heRO, hope you'll continue to like it here :3

Well, first of all, the guides you mentioned (the ones by Namine and Adrillf) are for people already acquainted with the basics of RO and are not entirely suitable for someone who's completely new to RO. You'll really need google up some info

...or use those extremely helpful links provided by Aaronock above. Even people with years of experience still use them. (Was in the middle of compiling useful links before actually realizing Aaronock already did it I blame mobile for that huge posting time difference).

Same thing for any start of an RPG advanture, I recommend reading on the classes available and mechanics like how stats and elements work. If you prefer experience instead of reading up heavy wall of text, just get online and explore for yourself! Go learn basics taught by the NPCs in the novice training ground. I think those are already tremendous help in starting out this game.