New to eBikes - where to start?

Hey everyone! Just got my first eBike, a commuter-style one, and I'm super excited to start using it for my daily 5-mile ride to work, which has a few decent hills. As a newbie, I'm a little overwhelmed by all the safety considerations – beyond just a helmet, what are the absolute must-have safety accessories or practices you seasoned eBike riders swear by, especially for city riding? I want to make sure I'm as visible and safe as possible out there!