Can someone please tell me how to use these dang wands..

IMHO it is one of lamest things in this game.

1. Equip the wand. By pop-up or character screen, doesn't matter.
2. Use pop-up (again, yes), go to inventory, click on magic, click on wand that has "+" in front which means it is equipped and voila! You can use it's ability!

Some things were tried to be made simplier in this game, but this thing is really too much simplified that at the end it got too much complicated!