Pacelining is an intermediate to advanced skill. If you want to learn, there'll be plenty of time.
Work on holding your line (that's important regardless; you want to be predictable to other users of whatever road/trail you're on); work on pedaling steadily rather than pedal/coast/pedal/coast. Get comfortable with glancing down at your computer to see your speed and elapsed time, without taking your attention off the road. When you feel like you have those three things down, then it's time to think about joining a paceline.