I'd second unrest, at 12 (13 now) im doing AE kites around the gazebo side of the house, tormented dead sometimes drop bronze weapons as well as zombie skins that can be sold to poison makers, and a bit of coin loot too. Easy exp too if you dont mind a little risk, i went from 12 to 13 in 3 kites and about half an hours work (only because theres some issue with getting skeletons in the kite because they run faster than the TD/deathbeetles and essentially you need to run a kite for the skeletons on their own before you get down to AEing the rest of the pack which takes more time). Once you level up a bit you can go into the house and take some mobs conventionally, just be damn careful of kiting ghouls - i could damage red ghouls w/ chords at level 12, but the problem with ghouls is their root, and they run with the skeletons, not the slower tormented dead, so the chances of gettign hit and rooted are alot higher. if you get rooted during an AE kite, you die and thats about the end of it ;)
btw a combine lute (bought in katta) is a must, bumps your chords damage up to 11 a tick and allows you to heal while running at an efficient rate, youll need sow potions too if you want to kite