XII is more like previous battle systems, where you can still tell each party member to take any action at any time. Abilities and skills are learned in a similar way to X, if I remember right - everyone starts out with different positions on the same "grid", though XII's looks like a periodic table. Characters don't have associated classes in the original game though, so some people complain you can grind out levels until everyone has everything.
Anyway, I hope you enjoy yourself. And remember, every single Final Fantasy is better than FFXIV (they may have improved it, but I tried the open beta and ugh).