Chandygarcia, as you descend to a new floor, you get a skill point for each of your characters. For each character, go to the window that shows all the skills and press the plus button next to the skill that you want.
Btw, try to build up your characters to focus on one mode of attack.
I have an ranger with 90% blinding.
I have a conjurer with 90% blinding.
I have a cleric with 110% stun and 50% blinding.
I have a warrior that can do over 2400 damage.
All have more speed than any of the enemies in the dungeon.
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