Crafting is simply using your existing items to make new ones. To do so you will need to obtain certain materials to craft your item. One of the most basic crafting material is wooden planks; this needs at least one piece of wood.
|1 Wood||4 Wooden Wall|
|15 Wooden Wall||10 Pick-Axe Health|
|10 Iron Ore||50 Pick-Axe Health|
|10 Diamond||100 Pick-Axe Health|
20 Pick-Axe Health
(To Craft Obsidian abotain 3 diamonds)