Better to start with low maintenance OP builds first as your core character. Because you would want a consistent core toon that can farm gear to feed to your future low levels.
Low Maintenance:
- Retaliation Tank builds
- Petmancers
There are several reiterations of these in the builds section, just knock yourself out. If you want High DPS, then I suggest you look into Blademaster, since the former 2 are strong overall but have slow clears. There are other strong OP builds there but require you to maintain buffs, debuffs and need a working brain to reach their potential. Which I don’t really advice for a new player’s first toon.