Hello Everyone - New player here!

[Risvertasashi]

So far im a Archer and if i understand correctly u can raise other classes in the same character (Not sure about that)

Welcome!

As for advice, I'll keep it simple - in relation to this, yes, FF lets you play every class on one character. So if you decide you don't like Archer later, or you do like Archer but are also curious to try others, there's no particular need to make a new character to try them (unless making a new character in itself appeals to you).

The other thing I recommend: Do main scenario quests (The meteor icon you've no doubt seen) sooner than later - they tend to unlock a lot of stuff. Also quests with a blue icon unlock things so keep an eye out for those.

Enjoy your adventures