I have the cabinet posted below:

As you can see, one user input will not cut it.  I will need mutiple buttons, with multiple joysticks, and a trackball... ergo, the top will need to be bigger, and so will the support below.  Problem is, I am a complete woodworking newb.  
I went by harbor freight and bought the following:
Hole Saw bits (a set)
A cordless drill, sander, and jigsaw
A router
I have a list of questions off the top of my head:
What kind of wood to use?
How do I attach the wood at the joints?  Nails?  Glue?  Both? Something else?
If I can have some generalized points, it would help.