Active job

Waterproofing a concrete floor and floor and installing a window

I want to create a liveable bedroom from a room beside my laundry which is not connected internally to the main house. It has a concrete floor which isn’t lined/waterproofed. I would like to add some sort of lining and flooring to make the room warmer (it is very cold currently) and install a window on the north side (weatherboard) as it has no windows.