The document discusses planning and estimating a residential building using AutoCAD. It describes planning a 3-story building on a 40' x 60' plot of land that will include bedrooms, bathrooms, a living room, dining room, kitchen, prayer room, and storage. AutoCAD is a software tool that will be used to design the functional layout and outer appearance of the building plans. CAD software like AutoCAD is used to create technical drawings and designs in various industries. The building plans generated from AutoCAD will provide accurate dimensions and technical details to determine the overall cost of construction before work begins.