My advice for a new ebike rider? For starters, always carry a tire tube patch kit, even a spare tube and an air pump. Tire pressure gauge. At all times. Experiment with your saddle height and front saddle nose angle for the most comfortable fit for you. Always check tire inflation before a ride; you will get the most mileage from your battery with tires properly inflated.
I found a good side mirror, mounted to the left side of your handlebar, is your best defense if riding on the roads.
Use your ebike's High power setting and "spin the pedals" to get used to getting the most efficiency out of the drive system as well as YOU in any ride featuring extensive miles beyond 3 or 4. In High power, you'll get to understand how many miles you can squeeze out of a full charge. Cadence is a part of spinning for max efficiency. My happy time cadence is anywhere in the 70 rpm range. To stay in that range while encountering various road surfaces, grades (hills), etc, this means you will be constantly shifting your bike to stay in that happy cadence.
I think it's true of all ebikes: aside from the happy spin cadence range in the 70's, it's also true that the best over-the-road speed that yeilds the best mileage attained via full battery charge is 13 mph. And I found anything over 16 results in quicker battery charge consumption as our body becomes like a brick wall in the face of the wind it is trying to punch through!
This all seems like alot but it's not. It just becomes human nature every time you sit on the saddle. It's all about attaining and maintaining the highest efficiency's you can; while keeping in mind the fun of just getting out there and doing it!