Starting in Survival
First you need to gather wood by breaking a tree press RT. Then turn them into planks. Start placing blocks with LT. Repeat step 1 and 2 again till 5 blocks high.
Then craft a crafting table out of 4 wood planks place it in your house. Make 4 sticks then create a wooden pick-axe and sword. Go and kill 2 sheep and craft a bed.
Eat your mutton go then to sleep in your bed by pressing LT.
Craft a door and place it in 2 spaces.