Here is a tutorial to help you grow seeds.
Step 1: Gather some wheat (from destroying tall grass, or on the Pocket and Pi Editions, hoeing the ground), Melons or Pumpkins.
Step 2: Make a farm next to your house, put some water in, and plant the crops.
Step 3: Keep growing and harvesting, and keep making the farm bigger.
Eventually, you will have enough space. Just check your farm every day and harvest the crops when fully grown.
Effiecient ways of farmingEdit