Quote Originally Posted by Pr0jectseph View Post
So am I correct in the assumption that the class which requires a level of 30 for a job to activate will be the "Base class" for that job?


Also, thanks for the help!
Jobs are an upgrade to your class, not a separate entity. You equip the appropriate soul crystal to switch to job-mode. As a Thaumaturge, you equip a Black Mage crystal earned from a quest at level 30. The job shares the same abiltities as the base class, but has limited access to cross-class abilities. In exhange, the job is more specialized for its role as it gains access to job-exclusive abilities.