I'd also strongly advise you to use the Quick Setup Wizard and to follow the WoW Quick Start Guide. That will give you a basic set of keys and functionality. Some parts of the FAQ will also be helpful, particularly the section onWhy do my toons move in different directions? as you will likely run into this problem if you use Repeater and broadcast your movement keys.

If you discover that you just can't train yourself to use the keyboard then all is not lost. You can use a Repeater Region to broadcast your clicks only when they are over your Actions Bars. See Common Modifications: Clicking.