Concrete dust and securing carpet

What is the best way to build a bedroom in our basment? My daughter wants to build her own room but what specific supplies will she need? To her just putting in some cheap walls with a drop ceiling is fine. Don't you need framing, insulation, raised flooring ect?:confused:

Hey everyone....need a little help here. I will be building a new home and I know this sounds like a dumb questions, but I need to know and don't know. Anyways, I will be having to do a step foundation as the front of the basement will be fully exposed (having a walk out). What is the normal size of a foundation? Since I am doing a step foundation, should I be putting styofoam insulation from the foundation out two feet to prevent the frost from getting under the foundation? If so, how far down should I be putting the insulation? How far around the corners should I go with the insulation? Is this insulation really needed? Any help would be greatly appreciated. :)