Hi @Robin Adams,
Thank you for posting your question in the Microsoft Q&A forum.
To assist you more effectively, I need to know which version of Microsoft 365 you are using. Could you please send me a screenshot of your version and product information?
You can find this by following these steps:
- Open Word.
- Go to File > Account.
- Click on About Word.
Please kindly help me take a screenshot of the Product Information and Version details.

In the meantime, based on your request, I've compiled the following information and guides on how to create and edit documents in Word. (based on my version)
Editing Existing Documents
- Opening a Document:
The simplest way is to double-click the file from your computer. Alternatively, you can open Word first, then go to File > Open and browse for the file.
- Enabling Editing Mode:
If you see a yellow banner at the top that says "Read-Only," the file is protected. You may need to:
- Click "Enable Editing" on the banner.
- If the file is password-protected, you'll need to enter the password.
- If you still cannot edit, go to File > Save As and save a new copy to your computer.
For more information, see: Enable editing in your document - Microsoft Support
- Making and Saving Changes:
Once the document is in editable mode, you can click on the text and start typing, deleting, or formatting. The toolbar on the Home tab provides all the standard formatting options. To save your work, go to File > Save or press Ctrl + S.
Tip: Using "Track Changes"
This feature is very useful for collaborative editing. Go to the Review tab and select Track Changes. Any modifications you make will be highlighted, allowing you or others to easily review and accept or reject them later.
Creating New Word Documents

For more information, see: Create a document in Word - Microsoft Support
Adding a Page Border:
Go to the Design tab and click on Page Borders. From there, you can customize the border's style, color, and thickness. 
For more information, see: Add a border to a page - Microsoft Support
Inserting Arrows and Shapes:
Go to the Insert tab and select Shapes. Choose your desired shape, then click and drag on the document to draw it. Hold down the Shift key while dragging to create a perfect circle, square, or a straight line.

Once you've drawn the shape, a new Shape Format tab will appear, allowing you to customize its appearance, including Shape Fill (color), Shape Outline (border), and Shape Effects (shadows). 
For more information, see: Add an arrow - Microsoft Support
I hope this helps you get started. Please send over that screenshot, and don't hesitate to let me know if you have any other questions.
Looking forward to your reply!
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