add info on getting help

book/_config.yml

@@ -38,3 +38,8 @@ html:
   use_issues_button: true
   use_repository_button: true
   favicon: _static/favicon.ico
+
+parse:
+  myst_substitutions:
+    miniconda_url: "[Miniconda](https://conda.io/miniconda.html)"
+    developer_discussion: "[QIIME 2 Forum Developer Discussion](https://forum.qiime2.org/c/dev-discussion)"

book/intro.md

@@ -3,6 +3,13 @@
 👋 Welcome to our book on QIIME 2 {cite}`qiime2-2019` development!
 *Developing with QIIME 2* is designed to help you write plugins, interfaces, and contribute to the QIIME 2 framework.
 
+```{note}
+If you need help developing with QIIME 2, please feel free to reach out through the {{ developer_discussion }}.
+This is preferred over contacting developers directly as there are many developers monitoring the forum (so you get help quicker!), and others can learn from our answers to your questions (so we can spend more time developing cool new functionality for QIIME 2!).
+
+**We commit to responding to requests for help on the QIIME 2 Forum, but direct emails, posts on issues trackers, etc may be closed without reply.**
+```
+
 ## About
 The content in this book is organized under the [Diátaxis](https://diataxis.fr/) framework {cite}`diataxis`.
 This means that you can expect Tutorials, How-To-Guides, Explainers, and References which each serve a different goal for the reader.