New to eBikes - where to start?

Hey everyone!

Long-time mountain biker here, but I'm completely new to the eMTB world and feeling a bit overwhelmed by all the options. I'm looking to get my first electric mountain bike, mostly for tackling some steeper, longer climbs in my local trails (think 15-20 mile rides with a good mix of technical singletrack and fire roads). What are some key things a newbie should look for in a first eMTB, or any common pitfalls to avoid? Any advice on motor types or battery capacity would be super helpful!