When you create a new project, Sweet Home 3D is divided into four parts: the furniture catalog, with all the possible rooms of the house and the different objects that they may contain; the furniture list, with all the elements that we add and their characteristics; the floor plans of the house, where we draw the different rooms; and last of all, the 3D view, where we'll see what the resulting project looks like.
By means of simple controls, we will draw the rooms on the floor plan and placing the furniture, doors, windows, stairs and other elements of our choice. Once we have seen the result from different points of view, we will be able to make a better decision.
If you're going to renovate your house, try out Sweet Home 3D. It will make things a lot easier for you and save you time and money.