I'm definitely open to the idea of a used rifle, though I think it would have to be a local one as I would want to see how I like the shape and feel of it.
It used to be that for cost in vs. fun out, used was the only way to go...not so now. Some folks want as much, or more for a used rifle than something shiny-new over a counter. And to be fair, Mossbergs (and others) of old, are of unparalleled quality by newly manufactured gun standards. Many are also "full sized". If you're new to the game, limit yourself...kinda like car sopping. Lots of folks will sell you "a" car, but not all of them should be "your" car.
Maybe your best bet would be to get in touch with some local shooters and try to get a range day together. I'm sure if you offer up a meal or some Timmie's you could lure some Vancouverites out to try a couple rifles. Try not to think of it as a right or wrong decision, a lot of new shooters feel pressured to buy the right gun first. Then their second is a big deal. Then one day you realize you've gone through so many guns and accessories that you picked a winner eighteen guns ago and bought 17 more to prove it. My point is there are too many guns to pick just one, you'll buy more and sell some. It sounds like you're on the right track so get out and have some fun with whichever you choose. Welcome to guns
^^ this is pretty nifty advice. Also, to avoid getting a bad reputation, bring a LOT of ammo. Every shot you take, give the owner a round.
Most of us are pretty pleased with our gems, and the notion of seeing someone
carefully handle, and shoot it isn't off-putting. Do you have any peers who shoot? Parents of peers? As long as you don't come off as a COD sniper, most of the gun lovers I know would happily help someone new to the game.
Same with the "right" gun purchase...If you don't really know what you want, how can you buy the "right" one to start? The only "wrong" I can conceive is a shooter not having a .22 at all! Interests may change, and .22's are a cool way to express that. If your ultimate goal is to shoot dimes at 100yds, a tacti-cool rifle may not be the best choice. If you're lugging it through country, looking to bag a few grouse, a 24" super-heavy barreled single shot may not be your first choice. etc etc etc. That being said(typed), no matter what you choose in a .22lr, you can have all kinds of fun with it! You really can try to shoot tiny groups with a tacti-cool at 100, and you really can slay a grouse with target gems.