Autocad 2018 Download And Install Permanently Link File
Select Components: Choose the components you need (usually AutoCAD and Material Library) and the installation location. Click Install.
Wait: The installation can take anywhere from 15 to 45 minutes depending on your hardware.
Autodesk offers free educational licenses that are renewable, effectively making the software "permanent" for as long as you remain a student or educator.
Autodesk Account Access