I have a BS in math, been programming for over a decade, took a high school physics class and was also in the robotics team, but fuck I don't know shot about electronics and shit. That always confused the tits out of me, how volts and watts and amps and current and capacitors and transistors etc all that shit, very confusing. Now I want to get a raspberry pi to dick around with servos again, but I also want to know a bit more about the circuitry. Any really short docs you'd recommend on the subject?