First go out and explore for some flat ground and find some flat ground and get ready to build.
Then you dig the a layer of dirt out of the ground by holding holding down the position with your thumb on your phone. Then you use a sturdy material from your inventory such as wood to fill up where you dug from step 2.
Then you build four columns to hold up the house by going to each corner and tapping with your thumb once until it had stacked up at least 4 times. Then repeat in each corner
Then fill in the space between the columns to be your walls by tapping each block on the columns until it reaches the other side .
Then you put a door so you can enter the house by digging out 2 blocks and going to the inventory and picking tapping on the door and then filling up the whole with the door.
you dig out some 4 blocks and fill them with glass. Then you have some windows in to get some light in your house.
Repeat step 5 on the other side of the house.
Then you fill in the roof by using material you have been using to fill in be using the same process as step 3.
You put some torches in as a light source during the long nights. Then hang them on the wall by using them and tapping them on the wall.
Add a bed so u can rest during the night to make time go faster.
Also you should add a painting to look fancy and for gest.(hint hint)
Add a rug for the hard wooden floor.
Then you might want to add a tree and you are done with an awesome house.