My first time driving an EV was also my first time driving an automatic. My mistake was nearly giving myself whiplash while my left leg instinctively searched for a clutch pedal and only found the brake, which it pushed down with significant force and gave me a nasty shock!
Not my mistakes, but especially if you have a new generation of LEAF, Remember that AC charging is by Type 2 connection, but rapid charging is by DC Chademo - Even if the rapid charger you visit has a type 2 connector, it won't rapid charge your car. That's a pretty common thing I see new users doing.
Other things to do are being prepared to avoid hassle later. If you ever do long trips, plan ahead. Make sure you have all the RFID Cards or apps that you need for using the chargers on the way. Plan your journey and make sure the places you want to plug in are reported as working on Zap Map or Plugshare apps, and have a plan B, just in case something goes wrong.
If you take advantage of cheap off peak electricity to charge overnight at home, remember the timer will remain in place even if not at home. If you plug in during the day at home or while visiting a public charge post, make sure you cancel this timer in order to charge straight away.
Finally, if your car isn't doing much right now, be sure to keep the battery around 50%. Don't leave it fully charged or with a low battery for long periods of time, as this can cause harm and degrade your battery pack.