Smelt an iron ingot.

Construct a better pickaxe.

Use planks and sticks to make a pickaxe.

Open your inventory.

Use Shears to obtain wool from a sheep.

Smelt an iron ingot.

Turn wheat into bread.

Cook and eat a pork chop.

Attack and destroy a monster.

Construct a furnace out of eight cobblestone blocks.

Construct one type of each tool (one pickaxe, one spade, one axe and one hoe).

Craft a workbench with four blocks of wooden planks.