User:Depressed pho/Windmill mining/Initial steps

Descend to Y=11, which is 6 blocks above the highest bedrock layer. This is the start point denoted by the grass block.

Dig a 1x2 tunnel of 4 blocks long from the start point, then put a mark there denoted by the gold block.

Turn right, dig 4 blocks, then put another mark denoted by the redstone block.

Turn left, dig 4 blocks, then put a mark.

Turn back, return to the previous mark, dig 4 blocks, then put a mark.

Dig 4 blocks and put another mark.

Turn left, dig 4 blocks, then put a mark.

Turn back, return to the previous mark, dig 4 blocks, then put a mark.

Dig 4 blocks and put another mark.

Repeat the previous step.

Repeat the previous step but while you are doing so, you'll reach the mark you put before. Now you are done.