Hey fellow Tem Tamers!

So I picked this up, probably because for the same reasons as everyone else. I like pokemon, but it has gotten stale, no doubt about it. I know the game has been out for a bit now, but I had some questions that I'm hoping to get, as spoiler free as possible, answered. For reference, I best my first dojo, and got to the second island, a big tree.

1. How many dojos are there, as well as landmasses. I have been unable to find any large world map in game.

2. Are shiny Tem Tem a thing? I think my rival had one.

3. With only 141 tems so far, is it rather easy to fill out that tempedia?

4. With this being online, and the breeding looking....complicated (I never did u derstand EVs or I'vs) will I be a lost casual in the online play?