diff --git a/docs/index.md b/docs/index.md
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+# Welcome to Textual documentation
+
+Textual is framework for rapidly creating _text user interfaces_ (TUIs from here on) with Python.
+
+A TUI is an application that lives within a terminal, which can have mouse and keyboard support and user interface elements like windows and panels, but is rendered purely with text. They have a number of advantages over GUI applications: they can be launched from the command line, and return to the command line, and they work over ssh.
+
+Creating a TUI can be challenging. It may be easier to create a GUI or web application than it is to build a TUI with traditional techniques. Often projects that could use one or the other never manage to ship either.
+
+Textual seeks to lower the difficulty level of building a TUI by borrowing developments from the web world and to a lesser extent desktop applications. The goal is for it to be as easy to develop a TUI for your project as it would be to add a command line interface.
+
+Textual also offers a number of enhancements over traditional TUI applications by taking advantage of improvements to terminal software and the hardware it runs on. Terminals are a far cry from their roots in ancient hardware and dial-up modems, yet much of the software that runs on them hasn't kept pace.
+
+## Commands
+
+- `mkdocs new [dir-name]` - Create a new project.
+- `mkdocs serve` - Start the live-reloading docs server.
+- `mkdocs build` - Build the documentation site.
+- `mkdocs -h` - Print help message and exit.
+
+## Project layout
+
+    mkdocs.yml    # The configuration file.
+    docs/
+        index.md  # The documentation homepage.
+        ...       # Other markdown pages, images and other files.
diff --git a/docs/reference/app.md b/docs/reference/app.md
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+++ b/docs/reference/app.md
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+::: textual.app.App
diff --git a/mkdocs.yml b/mkdocs.yml
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+++ b/mkdocs.yml
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+site_name: Textual
+site_url: https://example.com/
+
+
+theme:
+  name: "material"
+
+plugins:
+- search
+- mkdocstrings:
+    default_handler: python
+    handlers:
+        python:
+          rendering:
+            show_source: false
+    watch:
+      - src/textual
+