Returning player wanted some guidance
You have 5 or 6 character slots, and a L80 Boost that allows you to try out all professions, as many times as you want. As well as going to PvP.
It’s best to do just that, and find what you enjoy playing.
‘Most interesting starter zone’ is subjective. There is no difference in race as far as Professions go.
Good luck.
And you can go through each of the starting zones on any race