You're going to hear the phrase 'find out in character' (or FOIC) often. Unlike most (or all) other games, outside of help files and the general guidance given to new players to help them start out, most of what you learn about the in-character world is meant to be learned in-character (IC).
However there are several characters in-game whose job it is to help new players learn about the game and give them guidance, so that's probably the best place to start.
The best thing you can offer as a new player is not skills, but engagement and roleplay. Your interactions with other players are going to be much more relevant to them than whatever you spent UE on.
Aside from some skill pitfalls, I would recommend chosing an archetype that interests you personally, rather than one that might be strictly more powerful or flexible. It's really common for characters to be fairly diversified in their skills, so you're not locked into doing or being good at just one thing.