"Easily create designs in this CAD program"
The main problem with programs such as AutoCAD is the great difficulty in using virtually any tool.
However, thanks to the existence of applications such as QCad you will be able to create spectacular designs without having a high level of office automation. With an interface very similar to the one present in Microsoft's famous Paint, its tools can be used by practically any user.
Due to its extreme simplicity in all the tasks it allows, its number of downloads is really high. Thus, the number of CAD designs has increased significantly since the appearance of this program.