A good way to check out the different models is to swing by a local SuperCharger.
Usually someone there that is willing to chat about their new Tesla.
Might let you sit in theirs and check out the interior.
Bring a $5 Starbuck gift card or snack bar to thank them for taking a little time.
Who know, they might even offer you a short ride.
Last trip, a guy pulled into the Supercharger. Said he just got it, and was not comfortable with Supercharging. I showed him how to plug in, how to read the dash, and let him know he should be getting a text message when his charge was done. He was very relieved, and this simple act of kindness is repeated all the time with the experienced owners helping out the new people.
Same as what happens on these forums. Tons of helpful posts (and a few stinkers : >)
A nice group of owners just met up at the Kettleman Ca. mega 40 stall solar enhanced charger. They got together via some posts on forums. A few Model 3's were the hit of the event, with at least one owner offering demo rides to other Tesla owners. Everybody hung out in the lounge, had some Tesla coffee and exchanged stories.
You can also go to a local service or delivery center. Probably see a few Models 3's in their parking lot. Don't ask to sit in them, as they are usually undelivered customer cars, and don't have permission to allow others inside.