Google SketchUp

Toolbars
Camera controls
Pan
Zoom
orbit
Basic tools
Rectangle
Circle
Select
pencil
push /pull
Groups
Components
Move
Rotate
Copy
Array
Polar array
Offset
Paint bucket
Modeling practice
Walls + floor
Windows
Doors
Frames
tables
Openings
Creating materials
Search online for materials
Create new material
Edit materials
Scale
Rotate
Edit
Modeling practice
Chair
Shelves
Accessories
Warehouse
Download models
Edit models
Groups vs components
Scale