On both joysticks you will see a lever/switch right below it, when moved all the way up i believe it allows you to move that joystick, when moved down it will do the same thing, try centering both those levers/switches, this allows you to move both motors at the same time. Being that you're just learning i feel that would make it alot easier for you since you wont have to program it in. The down side of this of course is that whoever may be driving might accidentally bump the switch and disable one motor ( that could easily be fixed by just centering it again but why the hassle) Hope this helps.
