Add a page about the pre-kickstart activities

The document isn't public yet, so we should hold off merging this
until that's ready.

_data/sidebar_tree.yaml

@@ -135,6 +135,8 @@ tree:
   - url: /competitor_resources/
     title: Resources
     tree:
+    - url: /competitor_resources/pre_kickstart_activities
+      title: Pre-Kickstart Activities
     - url: /competitor_resources/microgames
       title: Microgames
     - url: /competitor_resources/markers

competitor_resources/pre_kickstart_activities.md

@@ -0,0 +1,13 @@
+---
+layout: page
+title: Pre-Kickstart Activities
+---
+
+# Pre-Kickstart Activities
+
+The pre-Kickstart activities provide a basic introduction to the kit which can be completed before Kickstart.
+
+We recommend you work through them as a team, so you can learn from each other.
+If you have any issues, just ask us on [Discord](/docs/tutorials/discord).
+
+You can access the [the activities here](https://docs.google.com/document/d/18Kt72gt__4len23zyeAXD-qkSsHw72Il7PjfBgGqwnU/preview).