15mm, 13mm and I think a 8mm.
Disconnect both battery cables.
Using a 8mm, disconnect battery charging cable from the alternator. Its the thick one.
Disconnect the alternator wire(small one. Just click it out)
Using a 15mm socket, place it on the nut on the pulley just to the left of the alternator, now turn it counter-clockwise to remove tension from the belt, slide belt off, and remove socket from pulley.
Using 13mm, remove 2 bolts securing the alternator and it should pop right out.
Installation is in reverse.