From the North Qeynos gate, there is some farm fields. In those fields are screcrows and farmers that shoul dbe good exp.
Also talk to the farmer in th emiddle, he'll give you some quests.
Go east on the road from NQ gate to the Hunters Cabin. updtairs you'll find Matsy Rollingpin. SHe'll give you quests for exp and food/drink as a reward.
The whole premise is to match up a quest with what you are killing. That way you get bonus exp when you complete the quest, plus a nifty item.
For mobs 12-14, go east a bit further and you'll find badgers, dear, and bears. The further east you go, the harder the mobs.
Good Luck!