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All of these materials are found in caves.  You need a pickaxe to mine these materials.  Read "How to Make Tools in Minecraft" to learn how to craft a pickaxe and other tools.  Stone blocks are grey blocks.  Use a pickaxe to mine cobblestone from stone blocks. Coal blocks look like stone blocks with black spots.  Use a pickaxe to mine coal from the coal blocks. Iron ore blocks look like stone blocks with yellowish spots on them.  Use a stone pickaxe or stronger to mine iron ore. A crafting table is built using four wood plank blocks in the crafting menu.  After you build a crafting table, place it anywhere in the world. To craft a furnace, select the crafting table and place 8 cobblestone blocks along all sides of the 3x3 grid.  Drag the furnace into your hot bar below your inventory.  With the furnace in your hot bar, equip it, then place it by right-clicking or pressing the left trigger on your game controller. To smelt your iron ore, select the furnace and place the coal in the bottom square in the window (below the icon that resembles flames).  Then place your iron ore blocks in the top square.  Allow a few minutes for the iron to finish smelting.  When your iron ore is finished smelting, select the furnace and drag the iron bars from the square on the right and place them in your inventory. To craft a bucket, select the crafting table and place an iron block in the left-center, right-center, and bottom-center space of the 3x3 grid.  Then drag the bucket into your inventory. Find an area in the village that gets plenty of sunlight, and is about 5x10 dirt blocks wide. You can use your hand (or a shovel) to dig a trench down the center of the garden.  The trench should only be 1 block deep. Place the bucket in your hot bar and equip it.  Then locate a nearby water source and use the bucket to gather water. After you gather water, return to your garden with the trench and dump the water in the trench to fill it. To craft a hoe, select the crafting table and place two sticks in the center, and bottom-center spaces of the 3x3 grid.  Then place two wood plank, cobblestone, iron bar, or diamonds in the upper-center and upper-left spaces.  Drag the hoe into your inventory. Sticks are crafted from wood plank blocks in the crafting menu. Carrots, potatoes, wheat seeds, beetroot, cocoa seeds, melons, and pumpkins can all be planted and grown. Carrots, potatoes, beetroot, and wheat seeds can be harvested from garden plots that already exist in villages.  You can also gather wheat seeds by breaking grass. Place the hoe in your hot bar at the bottom of your inventory.  Then equip it.  Use it to till the soil two spaces on either side of the trench with water in it. After the soil has been tilled, place your crops in your hot bar and plant it in the group by right-clicking or press the left trigger on the controller.  Allow a few days for the crops to grow. After the crops are fully grown, click on them or press the right trigger to harvest them.  Villagers will often harvest the crops for you, as well as grow new crops in the gardens you build for them. If a villager has 3 bread, 12 carrots, 12 potatoes, or 12 beetroots in their inventory, they will become willing to breed. To craft bread, select a crafting table and place three wheat stalks in any row of the 3x3 grid.  Drag the bread into your inventory.

Summary:
Mine cobblestone, coal, and iron ore. Build a crafting table and place it. Use the crafting table to craft a furnace and place it. Use the furnace to smelt the iron. Use the crafting table to craft a bucket. Find a well-lit area in the village. Dig a trench down the center of your garden. Use the bucket to gather water. Fill the trench with water. Use the crafting table to craft a hoe. Gather materials to grow. Use the hoe to till the garden. Plant your crops. Harvest the crops.