1) Open Chrome and go to https://edu.sketchup.com/app
2) Select sign in with Microsoft Account
3) Choose "Create New"
4) Create a basic house using the "rectangle", "line" and "push/pull" tools.
5) Your house needs:
4 Walls
1 Roof
4 Windows
2 Doors
A chimney
Extras (choose 2)
Deck
Yard
Fence
Sport Court
Pool
See this tutorial if you want to follow instructions