1. Talk to Doric, he will tell you that if you obtain some ores for him, he will let you use his anvils. Agree to his terms and tell him that you will work on it.
2. Obviously, if you have level 15 mining, you probably have a pickaxe, if you don't, you can either buy one from a player or from the Dwarven Mines north of Falador. You can also find a Bronze Pickaxe spawn in one of the houses in the Barbarian Village.
3. Once in the mines, mine the ores that Doric requested:
   • 2 Iron Ore
   • 4 Copper Ore
   • 6 Clay
   Here's some pictures showing how to get to the dwarven mines and the inside of the dwarven mines. I recommend going here to mine the ores because it's the closest place.
4. Head back to Doric's hut and give him the items. Enjoy the reward, at level 15 mining, you should gain a few levels. You can also now use Doric's anvils, and enjoy 180 gp of pocket cash!

That's the last of my Runescape quest guides that I've done for this newcomer tutorial, I do hope you enjoyed reading it and found it useful. Please don't let that be the end of your journey however. Check out Killer Guide's ultimate Runescape Quest Guide. It packs a punch at over 100 pages of detailed quest walkthroughs.