To add a link to your guestbook:

1. Go to the Create & Update tab of your GeoCities Control Panel and click the "Add-Ons" link.
2. Under "Visitor Feedback Tools," choose "Guestbook."
3. In the "Guestbook Manager" section, select "Install Links to Your Guestbook."
4. Copy the code provided in Step 1.

Once you have copied the HTML code, you can add it to the web page in which you'd like the guestbook to appear. Learn how to add HTML to your page.