I'm a PC player and I use gamepad regularly in various games. I play FFXIV with gamepad becouse I know it is designed to be played that way. I heaven't been playing to much so far, but gamepad seems to be working really good in this game. I still don't know how to do some things though;

How do I use items like potions and other, similar things?
How can I switch actionbars? (actionbar 1, 2, 3)
How do I put anything on those "Alt" and "Ctrl" actionbars that I can see when I hold certain buttons on gamepad?

I really don't know where to find answers to those questions, so if anybody could guide me I would be very thankfull.

I use standard PS3 gamepad.