Most will tell you go to Unrest. Personally I avoid that zone (pathing is horrible.) I'd suggest going to HPH. You can solo the gnolls and orcs easily enough, and start groups with anyone that logs in. You can duo with anyone there. You'll get decent loot, exp, and have the safety of patrolling guards and zonelines, along with a nearby bank and merchants. I recommend saving all the scalps until you are done fighting there. Usually around 24/25 I'll turn everything in.
Being a shaman, 24 is a great level. I wouldn't blame you if you started turning in at 23.
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