This quest is given by the NPC Glumlee. It requires smelting a copper bar.
Complete Learning to Swing
HOW TO COMPLETE QUEST
Go to the forge and drag your copper ores into the first slot. Then use Glumlee’s Special Tutorial Oil in the second slot.
Tip: Drag the tutorial oil out of the second slot and into your inventory right when the ores are almost done smelting. This will allow you to reuse the Special Oil!
10 Crude Oil
20 Mining Exp