After downloading, burn the ISO file to DVD or save it to USB. Once you boot your PC / Laptop with the DVD / Pendrive the installation program will run. Follow the guided steps of the program to complete its installation.
This supplied Microsoft installation includes a 180-day trial. To convert to a full version, run the command:
cmd / Powershell
as administrator:
slmgr.vbs /ipk XXXXX-XXXXX-XXXXX-XXXXX-XXXXX
(Instead of the Xs, enter the product key)