ESCs get more and more complicated every year, so let The Drake walk you through what you really need to know to get your off-roader dialed in. His explanation is based on 1/8 off-road racing, using a Tekin RX8 Gen 3 with a 1900Kv motor, but the concepts are universal.
Speedy RC gives a great overview of a transmitter's steering settings and how he tunes them for speed runs, so the car isn't too twitchy.
Tekin's Ty Campbell explains what the "torque level" setting on RC ESCs means and how to set it to fit your driving style.
Nick Wautlet of Wallie Builds walks you through the nitty gritty of hooking up batteries, motors, and servos to give your car that "factory" look. And of course, short, clean wiring also means more efficient energy transfer and more reliable connections, so not only will your car look better, it'll run better!