New to eBikes - where to start?

Hey everyone!

Just picked up my first eBike, an Aventon Pace 500.3, and I'm super excited to join the community! I'm planning on using it for commuting about 10 miles each way, mostly on paved paths with some slight inclines. What are some essential accessories or beginner tips you wish you knew when you first started riding your Aventon? Any advice on maintenance, security, or even just fun upgrades would be awesome!