The best way to gain knowledge on EV's is of course to drive them. Take as many as you can for a test drive. Analyse your driving for the last couple years and see what you need it to do. How far do you go, what are the conditions, how many people are in the car, how much luggage etc. Nothing against sales people but they are usually not well informed on EV's unless they own one.
Your operating costs (gas and maintenance) will be about a fifth of what they are for a gasser but some manufacturers have developed goofy maintenance schedules that can kill some of that. EG, brake fluid changes every 24 months, tire rotations every 6000 KM, Hepa filter changes way too often. They don't affect warranty but just be aware. There is very little to do on an EV so dealerships have become "creative". Tesla is the same. You can decide what is silly and what isn't.
Once you find a vehicle you think might work join an internet forum from that car. eg Tesla, Nissan leaf etc. Anything bad always comes out on a forum as people usually don't report good things about a product. Kinda like the RV.net forum. :)
Cheers.
John