Mining Guide

Go to the mining field south of the starting city, the field is located on the lower right corner. After arriving there, you should see 2 npcs. The first guy looks like a buff-looking dude and the other one's a short man. The short one sells pickaxes so click on him and pick the first option.
-the 1st 2 picks are the same, both lvl 1 but only with a different durability.
-the last 2 are lvl 2 tool, they are the same with different durability.
You need to raise ur mining skill (through commoner) to level 2 to use the level 2 tool.
now, go deeper into the mining field until there is a small mining animation pop up on ur lower left of your screen. (above chatting window). Click on it and a window should pop up, drag the pick (the one u bought) into an empty square on the right window. Click on the window and start mining.