Using a Microsoft account with a third-party email address
You can create an Outlook.com or Microsoft account with a new email address or use an existing email address from a third-party email account, such as Gmail or Yahoo, but there are certain limitations when using a third-party email address as the primary alias for your Microsoft account.
Applies To: Outlook.com
Insert a document in Word - Microsoft Support
You can insert the content of previously-created Word documents into a new or different Word document. Click or tap where you want to insert the content of the existing document. Go to Insert and select the arrow next to Object .
Applies To: Word for Microsoft 365, Word 2021, Word 2019, Word 2016, Word 2013