Legal regulations for eBikes

Hey everyone!

Just got myself a sweet new folding eBike – perfect for commuting and throwing in the car for weekend adventures. It got me thinking though, with all the different classes and power outputs, how do you all keep up with the legal regulations for eBikes, especially when traveling between states or even just different cities? I'm a bit worried about unintentionally breaking a rule somewhere. Any tips or resources you use to stay informed?