When you get to the Dwarves Village, use the Runestone there to travel back to Turint. From Turint, travel east into the Highlands. Stay on the road and kill everything you see. You will find a Stone Troll, then a small group of Orcs. After killing the Orcs, head South to another group of Orcs. Kill them, and you will find a dying Town Guard. Talk to him, he will give you a letter for the general of the dwarves. Walk back to Turint, use the Runestone there to go to the Dwarves Village. Talk to the dwarf named Ned (he'll have a yellow exclamation point over his head). Tell him you have a letter for him. He'll say something, and you say "But they're doomed without your help!". As soon as you say that, you'll get 3000 to 4000 experience points. Go back to the Runestone and do it all over again, you can do it as many times as you want for unlimited experience points.