Hello,
You can either do a Team Hunt or Solo Hunt.
Wherever you can get plenty of monsters and cover them with the Diamond Arrow AOE or surround yourself at higher levels, that's the place, as long you're satisfied with the exp and/or profit obtained.
Most common places for TH are:
- Roshamuul Prison
- Deep Banuta
- Nightmare Isles
Common Solo Hunts:
- West Oramond
- Mini Rosha (Feyrist)
- Lizard Chosen
These are some examples, be careful since you need to watch your set, hp and how many monsters, if there's anything that could paralyze you, etc.
Edit:
Usual Attack Rotation is: Diamond Arrow > Mas San (If can/want to use mana which will help you level up your Magic Level > [(Ava/GFB/Thunder/Stone)] > repeat
Healing in betweens as needed