New player, Need helps.
Just try everything you cannot “ruin your character” in any way. Enjoy leveling, everything gives XP. Everything.
Last of the Red Hot Swamis
You can always change the way your character is built; none of the decisions regarding skill or trait choice is permanent. In fact these choices will change as you level up anyways. The best advice I have is that dynamic events and personal story quests grant the most XP while doing PvE content. If you like PvP, I hear the XP gain from that is also generous so you can choose which way you’d like to progress. As you level you’ll open up more choices, skills, traits, etc. If you try out many different weapons and skills, you’ll have a fair idea of what you want by the time you’re 80.
Live, learn, level up.