I get warnings about a program accessing email address information or ...
These security warnings appear when a program attempts to access your contact information in the Outlook Address Book, or attempts to send email on your behalf. By default, only COM add-ins are trusted programs.
Customize or create new styles - Microsoft Support
Right-click the text on which you want to base a new style. In the mini toolbar that appears, click Styles, and then click Create a Style. In the Create New Style from Formatting dialog box, give your style a name and click OK. Your new style will now appear in the Styles gallery.
Collaborate on Word documents with real-time co-authoring
Download this Collaborate in Word learning guide, or type Collaborate in the search box in File > New in Word (works best in versions 2016 and later for Windows).
Use mail merge to send bulk email messages - Microsoft Support
Create and send personalized email messages to everyone on your address list with mail merge.
Share your documents - Microsoft Support
Office for the web Quick Starts. Training: As you work in Microsoft 365, it's simple to share your files and collaborate with others in real time - on documents, worksheets, presentations, and more. Watch this video to learn how.
Add a signature line - Microsoft Support
Add a signature line for a printed document. Add a signature line for an online document. Add a graphic of your handwritten signature. Save a signature block as AutoText. Insert a graphic of your signature, save it as AutoText, or add a blank signature line to an online or printed document.
Apply styles - Microsoft Support
Insert a table of contents. Select text and apply a style such as a title, header, or paragraph using the Styles gallery.
Add or remove a digital signature for Microsoft 365 files
Sign the signature line in Word or Excel. When you sign a signature line, you add a visible representation of your signature and a digital signature. In the file, right-click the signature line and choose Sign. If the file opens in Protected View, select Edit Anyway, if the file is from a reliable source. Do one or more of the following:
Accessibility tools for Microsoft 365 - Microsoft Support
Accessibility tools for Outlook. Accessibility tools for SharePoint. Learn about accessibility tools for Microsoft Office.
Insert a page break in Word - Microsoft Support
You can't remove the page breaks that Word automatically inserts, but you can remove manual page breaks from your document.
Using Modern Comments - Microsoft Support
Using Modern Comments. The modern comments experience in Word sets the stage for richer collaboration by your team and aligns the commenting experience across the Office suite.