[Hessah]

I would recommend for you train on monsters that you need for your quest. That's one of the best way to level up and get a bit of copper. Surely you wouldn't have had finished all your quest right? (coz I have trouble keeping myself up to date with quest)

Otherwise... Have you got any production skills? Should check out the monsters drops page and see which mobs drop what you need.

If not again... then go for monsters that are yellow-named to you.