Should I return and how to play?

I played this game like 15 years ago as a kid. I honestly don't really know what is good and how to play the game 'properly'. For me the game has mostly been leveling up and trying to get some gear, although I don't really know what is good or efficient. On this one server I have a few older characters with lots of random loot, mostly from way back. I've played mostly f2p and don't mind subbing but I want to at least be somewhat invested into the game then, which now I feel like I'm not. More or less I'm looking for a reason to play this game and get the hang of it. I've played MMO's a lot before, although this one is very different. Mostly, I'd like to give it a try for nostalgia's sake.

Is there maybe an active English speaking community in this game? Maybe willing to help out a newish player to the game?

What class would you recommend, not for a new player, but in general. I'm not necessarily looking for the easiest class but something that would actually be valid later on in the game and possible team comps as well, while also being fun. Also, I don't mean to multi box or be at a disadvantage for not multi boxing.

If I could get some tips on making in-game money or how to start and what to while leveling and focus on that would great and much appreciated too. Maybe there are some guides you can link me to.

Thanks for taking the time read my post :)