Fael

Heres some various useful tidbits:

PVP:
In PVP (the top right icon displayed in my friend aboves screen)
there are three servers, the top server you can gain PVP points and PVP experience in, and the other two just for fun. PVP points can be used along with currency to purchase unique weapons or healing items.

Stress Meter:
Stress Meter is the blue bar above your SP, you start with 156 stress and it decreases by 1 each time you go to a NEW screen on a play field (if you backtrack onto old screens it will not take stress). Once it runs out some people say PVP raises it back up, I however have not seen it increase. There is a set point each day when you regain stress, which would be 2 PM Pacific Time.

Job Change:
Job changing begins at 18 for all classes. Talking to your skill npc, you'll find a quest that is a purple book, you can pick any of the available jobs, and only after you have COMPLETED the first quest for that job are you binded to that job, ex: you start the Ranger quest but drop it and take Spitfire.
There are four quests to each job change if I'm correct. A few of the starting quests are simple things, such as accomplish 70% style or technic, get an A grade on a map, but progress into things most non-korean readers can't really understand.

I'll post later with screens on how to do various things such as upgrade items etc. just simple things that arent too hard to figure out but some casual players may be wondering.

Also help with the above question would be greatly appreciated.