Hi Bill & Welcome onboard !
You don't have to be an electronics geek to get started with CNC, the hard work has already been done by others, it became a little bit like with computers, you just have to choose the right hardware that suits your needs/budget, if you have basic soldering skills and can recognize electronic components you can assemble your own electronics from available schematics =>cheaper, or if you don't have that basic knowledge just go ahead and buy preassembled hardware you'll just have to wire it together=> faster but more expensive depending on the hardware.
When buying a computer components to build your own computer you need to know the you need a hard drive a motherboard ...etc in CNC you'll need an interface board (BOB) motor controller boards ...etc
You'll find loads of info on the following website:http://www.pminmo.com/
This pic'll give you a general idea about the setup (a good summary about the setup):
I hope you have a quality well tuned screen because you'll have a lot of reading... and don't forget Google.com is a valuable friend.
I hope it helps, and good luck !