One of the essential skills to have when starting out in R/C is the ability to solder a few connections together. It may come to the surprise of the new moderler that often times, connectors on the ends of batteries and motors require you to break out a little soldering iron and a few minutes of time.
First up is a great 15 minute how to on replacing bullet connectors on your electric motor.
Next up is how to solder Deans connectors, an essential skill for anyone.
And to wrap up the great tutorial is a walk through on how to solder bullet connectors onto a speed controller. Excellent!