Miscellaneous topics that do not fit into specific categories.
If you purchased your subscription to Microsoft 365 from Microsoft, follow the instructions from Microsoft to download your software. Once the software has downloaded, open any Microsoft 365 app, like Word, and the software will install all by itself. Once the software has installed, open any app and go to File > Account and sign in to the same Microsoft account that you used to buy the software. Your software is now ready to use.
If you purchased your software from someone other than Microsoft, follow that vendor's instructions for installing and setting up your software.