Kill willowisps in NK and turn in the Greater Lightstones and sell the book back to the same lady for lotsa plat and lotsa exp.
http://wiki.project1999.com/Research_Aid
Great exp and plat at that level and there's so many roaming wisps you don't have to fight people for any camps. The worst you'll see is a bard kiting a bunch of wisps, but there's wisps in other zones too. Erud's Crossing has an island full of wisps and if you exp there, there's a 99% chance you'll be the only one in the zone.
Wisps are blue until 17, the quest is good passed that.