To link your copy of Office to your identity, go to office.com. You will need to sign in with a Microsoft account (Outlook, Hotmail, or Live). 3. Enter Your Product Key

: Use Heading Styles (found in the "Home" tab) for better organization.

Microsoft no longer sells Office 2019 directly on their main store (they push Microsoft 365 now). However, you can still buy a legitimate product key from: