diff --git a/README.md b/README.md
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+++ b/README.md
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-# slides
+# impress
 
-A repository where I backup slide style presentations in various formats.
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+A repository where I backup impress.js presentations.
+
+## Rules of thumb
+
+- Each presentation should be in a folder with the name of the presentation.
+- The folder should contain the `index.html` file
+- The folder can have a `style.css` file and other static files like `js` folders.
+- Images should be wither referenced via public url, or placed in a folder called `img` inside the presentation folder.
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diff --git a/impressjs/berlin/index.html b/berlin/index.html
similarity index 100%
rename from impressjs/berlin/index.html
rename to berlin/index.html
diff --git a/impressjs/berlin/style.css b/berlin/style.css
similarity index 100%
rename from impressjs/berlin/style.css
rename to berlin/style.css