CTRL+M = Magic list
CTRL+J = Job ability list
CTRL+W = Weapon skill list
CTRL+A = Attack what you have targeted
CTRL+L = Talk to linkshell
CTRL+R = Reply to the tell, keep pressing to cycle through
CTRL+T = Just brings up "/tell" in your chat, have to type name
CTRL+V = Enter first person mode
CTRL+H = Heal
CTRL+N = Deselect / Exit menu

I think that's everything. A lot of people don't know these shortcuts, but they are quite handy in getting to stuff faster if you don't use many macro's. However, I highly advise the use of macros because eventually you'll want to do equipment swapping for certain spells, abilities or weapon skills.

Another thing, research on FFXIclopedia and http:///www.ffxiah.com/ on stuff that drops from enemies, and see what prices are for NPC shops and AH. Sometimes it's better to sell direct to NPC for instant gil.