[TheCrimsomBlade]

I'm quite confuse with that thing, my build have primary and secondary? Is this the same as dual classing? Can you dual class is the game?

Yes both single and Duel Classing! you have a primary set of skills and a secondary set of skills to use if you wish to be a duel class PC. Most beta testers have found that using the Monk class as your secondary comes in very handy in that the monk can have the skill of heal and unlimited resurect.
Where every other class can only use a Signet Ring of resurection and can only use the ring once per each quest. On every quest 50% of the PC's die in Battle sometimes more than once and if your single character Monk is one of the dead and everybody has already used their ring of resurection then the remaining PC that is duel class such as a warrior/Monk known as the Paladin class can resurect everbody over and over as needed. Not only can you Heal and resurect but you can also be a usefull tank if there are a number of duel class PC's useing the Monk as their primary or secondary class.