Do Slime Kingdom Quest, and there's a good chance you'll get an enhanced (up to +6) level 15 weapon in ur reward chest...
apart from that, i dont know if there's any good equipments around ur level... i guess shop around and see wat other people have...
When you get to lvl 20, you'll get to do a job change quest that allows you to become a wizmage once you've completed the quest (which is find a key, then go and fight "urself"...)
The Wiki is actually very detailed, it goes from which NPC to talk to all the way to wat you have to do... and wat to expect...
http://www.fiestafan.com/wiki/Job_Change_Quests
I'm not sure what else you'd need to know....