I know what you're thinking, you want to know how it all works, right? Let me explain...
First you turn the time circuits on. There are 3 input dates on the circuits, the first is your destination time which tells you where your going, The second tells you the present time and the third tells you where you were the last time you departed.
Next you must input your destination into the time circuits using the keypad. The Timecar needs a nuclear reaction to generate the 1.21 gigawatts of electricity needed and so plutonium is very carefully placed into the plutonium chamber.
Of course the most importent part of all is the Flux Capacitor as this makes timetravel possible.
...Where would you like to go?