Jobs

You start as Novice Base and job level 1. Reach job level 10 to change class.
Reach job level 50 to change again class.
Reach base level 99 and job level 50 to do Rebirth, alternatively you can switch to 3rd classes, but you will lose skillpoints, statpoints, HP and SP.
Now you are High Novice base level 1 and job level 1. Reach job level 10 to change class.
Reach job level 50 to change again class.