ppm controller questions. [first build]

Hello all.

Just went through the motor setup and it was frankly just amazingly simple. but now im onto the controller which I have a HK-GT2B (ppm) .

I see where the three pin ppm module goes but I have no idea where the brick goes (on the right) http://imgur.com/a/LhKmC

furthermore, in the controller setup it gives me a choice of what type of control I want. I have absolutely no idea which setting to use. http://prntscr.com/fhxcyu

Any help would be very much appreciated.