Well, I have some update on this: I stopped reading the Wikipedia articles because they all drift off to theory. I stopped by my friend's house and he gave me a run down of how things generally work. He explained the basics. What I'm going to end up doing is here in the next week or so, I'm going to order a few basic components (LEDs, resistors, wires, capacitors, etc), an Arduino, a breadboard, and some sensors. I'll just build random crap and learn how things work. If I need supplemental information I'll head over to Wikipedia.