Welcome to the club! A few things to keep in mind:

1. The visibility of Prius is poor, so pay extra attend when you park and move around in narrow space

2. The sheet metal is very thin (even thinner than other Toyota). So some slightly scratch can make big marks :)

3. When you use heating, the mileage drops a lot. But AC doesn't affect mileage.

4. Make sure your tire were inflated correctly, this will affect your mileage.

5. Don't block the battery vent on the rear door on massager side.

6. Smile to other Prius driver on the road. I found most of them are 40+ old :(