So I picked this up from Steam for about 5 now that I'm reaching the finale of my FIV LP. I'm planning on starting this fairly soon and I'd like your advice!

Not counting FFX-2 or FFT, this'll be my first job class focused Final Fantasy so if there's any advice regarding which job is best, which job I should avoid, and that sorta stuff, I'd be grateful.

More general advice about the game, like any mechanics I should be aware off would also be helpful.

Regarding the version: I'm pretty sure the Steam version is based on the DS remake, if that changes anything.