diff --git a/_includes/layout/sidebar.html b/_includes/layout/sidebar.html
index e86467f..272f15b 100644
--- a/_includes/layout/sidebar.html
+++ b/_includes/layout/sidebar.html
@@ -17,6 +17,9 @@
                         </a>
                     {% endif %}
                 {% endfor %}
+                <a href="https://mana.atabook.org/">
+                    guestbook
+                </a>
             </div>
         </div>
 
diff --git a/_updates/2024-11-15-title.md b/_updates/2024-11-15-title.md
new file mode 100644
index 0000000..b597437
--- /dev/null
+++ b/_updates/2024-11-15-title.md
@@ -0,0 +1,5 @@
+---
+title:  "site update"
+date:  2024-11-15
+---
+updated the top part of the [now]({% link _pages/now.md %}) page, added a [guestbook](https://mana.atabook.org/) and fixed some spelling errors.
\ No newline at end of file