Add why guidance to task pages and reference Diátaxis

content/en/docs/contribute/style/page-content-types.md

@@ -13,6 +13,9 @@ The Kubernetes documentation follows several types of page content:
 - Tutorial
 - Reference
 
+You may also find the [Diátaxis](https://diataxis.fr/) documentation framework
+helpful as a reference for how to write each of these page content types.
+
 <!-- body -->
 
 ## Content sections
@@ -137,9 +140,14 @@ Within each section, write your content. Use the following guidelines:
 - Use a minimum of H2 headings (with two leading `#` characters). The sections
   themselves are titled automatically by the template.
 - For `overview`, use a paragraph to set context for the entire topic.
+  Briefly explain why a reader would want to perform this task (the motivation
+  or use case), so the reader can decide whether the page is relevant to them
+  before reading the steps.
 - For `prerequisites`, use bullet lists when possible. Start adding additional
   prerequisites below the `include`. The default prerequisites include a running Kubernetes cluster.
-- For `steps`, use numbered lists.
+- For `steps`, use numbered lists. Keep the focus on the task itself. If a
+  step requires substantial background, link to the relevant concept page
+  rather than repeating the explanation here.
 - For discussion, use normal content to expand upon the information covered
   in `steps`.
 - For `whatsnext`, give a bullet list of up to 5 topics the reader might be