diff --git a/intro/part5/index.html b/intro/part5/index.html
deleted file mode 100644
index 7b6bea9..0000000
--- a/intro/part5/index.html
+++ /dev/null
@@ -1,41 +0,0 @@
-<!DOCTYPE html>
-<html>
-  <head>
-    <meta charset="utf-8">
-    <title>Conduit</title>
-
-    <link rel="apple-touch-icon" sizes="180x180" href="/assets/icons/apple-touch-icon.png">
-    <link rel="icon" type="image/png" sizes="32x32" href="/assets/icons/favicon-32x32.png">
-    <link rel="icon" type="image/png" sizes="16x16" href="/assets/icons/favicon-16x16.png">
-    <link rel="manifest" href="/assets/site.webmanifest">
-    <link rel="mask-icon" href="/assets/icons/safari-pinned-tab.svg" color="#5bbad5">
-    <meta name="msapplication-TileColor" content="#da532c">
-    <meta name="theme-color" content="#ffffff">
-
-    <!-- Import Ionicon icons & Google Fonts our Bootstrap theme relies on -->
-    <link href="//code.ionicframework.com/ionicons/2.0.1/css/ionicons.min.css" rel="stylesheet" type="text/css">
-    <link href="//fonts.googleapis.com/css?family=Titillium+Web:700|Source+Serif+Pro:400,700|Merriweather+Sans:400,700|Source+Sans+Pro:400,300,600,700,300italic,400italic,600italic,700italic" rel="stylesheet" type="text/css">
-    <!-- Import the custom Bootstrap 4 theme from our hosted CDN -->
-    <link rel="stylesheet" href="//demo.productionready.io/main.css">
-
-    <script src="elm.js"></script>
-  </head>
-  <body>
-    <script>
-      var app = Elm.Main.init({flags: localStorage.session || null});
-
-      app.ports.storeSession.subscribe(function(session) {
-        localStorage.session = session;
-
-        // Report that the new session was stored succesfully.
-        setTimeout(function() { app.ports.onSessionChange.send(session); }, 0);
-      });
-
-      window.addEventListener("storage", function(event) {
-        if (event.storageArea === localStorage && event.key === "session") {
-          app.ports.onSessionChange.send(event.newValue);
-        }
-      }, false);
-    </script>
-  </body>
-</html>
diff --git a/intro/part6/index.html b/intro/part6/index.html
deleted file mode 100644
index 7b6bea9..0000000
--- a/intro/part6/index.html
+++ /dev/null
@@ -1,41 +0,0 @@
-<!DOCTYPE html>
-<html>
-  <head>
-    <meta charset="utf-8">
-    <title>Conduit</title>
-
-    <link rel="apple-touch-icon" sizes="180x180" href="/assets/icons/apple-touch-icon.png">
-    <link rel="icon" type="image/png" sizes="32x32" href="/assets/icons/favicon-32x32.png">
-    <link rel="icon" type="image/png" sizes="16x16" href="/assets/icons/favicon-16x16.png">
-    <link rel="manifest" href="/assets/site.webmanifest">
-    <link rel="mask-icon" href="/assets/icons/safari-pinned-tab.svg" color="#5bbad5">
-    <meta name="msapplication-TileColor" content="#da532c">
-    <meta name="theme-color" content="#ffffff">
-
-    <!-- Import Ionicon icons & Google Fonts our Bootstrap theme relies on -->
-    <link href="//code.ionicframework.com/ionicons/2.0.1/css/ionicons.min.css" rel="stylesheet" type="text/css">
-    <link href="//fonts.googleapis.com/css?family=Titillium+Web:700|Source+Serif+Pro:400,700|Merriweather+Sans:400,700|Source+Sans+Pro:400,300,600,700,300italic,400italic,600italic,700italic" rel="stylesheet" type="text/css">
-    <!-- Import the custom Bootstrap 4 theme from our hosted CDN -->
-    <link rel="stylesheet" href="//demo.productionready.io/main.css">
-
-    <script src="elm.js"></script>
-  </head>
-  <body>
-    <script>
-      var app = Elm.Main.init({flags: localStorage.session || null});
-
-      app.ports.storeSession.subscribe(function(session) {
-        localStorage.session = session;
-
-        // Report that the new session was stored succesfully.
-        setTimeout(function() { app.ports.onSessionChange.send(session); }, 0);
-      });
-
-      window.addEventListener("storage", function(event) {
-        if (event.storageArea === localStorage && event.key === "session") {
-          app.ports.onSessionChange.send(event.newValue);
-        }
-      }, false);
-    </script>
-  </body>
-</html>
diff --git a/intro/part7/index.html b/intro/part7/index.html
deleted file mode 100644
index 7b6bea9..0000000
--- a/intro/part7/index.html
+++ /dev/null
@@ -1,41 +0,0 @@
-<!DOCTYPE html>
-<html>
-  <head>
-    <meta charset="utf-8">
-    <title>Conduit</title>
-
-    <link rel="apple-touch-icon" sizes="180x180" href="/assets/icons/apple-touch-icon.png">
-    <link rel="icon" type="image/png" sizes="32x32" href="/assets/icons/favicon-32x32.png">
-    <link rel="icon" type="image/png" sizes="16x16" href="/assets/icons/favicon-16x16.png">
-    <link rel="manifest" href="/assets/site.webmanifest">
-    <link rel="mask-icon" href="/assets/icons/safari-pinned-tab.svg" color="#5bbad5">
-    <meta name="msapplication-TileColor" content="#da532c">
-    <meta name="theme-color" content="#ffffff">
-
-    <!-- Import Ionicon icons & Google Fonts our Bootstrap theme relies on -->
-    <link href="//code.ionicframework.com/ionicons/2.0.1/css/ionicons.min.css" rel="stylesheet" type="text/css">
-    <link href="//fonts.googleapis.com/css?family=Titillium+Web:700|Source+Serif+Pro:400,700|Merriweather+Sans:400,700|Source+Sans+Pro:400,300,600,700,300italic,400italic,600italic,700italic" rel="stylesheet" type="text/css">
-    <!-- Import the custom Bootstrap 4 theme from our hosted CDN -->
-    <link rel="stylesheet" href="//demo.productionready.io/main.css">
-
-    <script src="elm.js"></script>
-  </head>
-  <body>
-    <script>
-      var app = Elm.Main.init({flags: localStorage.session || null});
-
-      app.ports.storeSession.subscribe(function(session) {
-        localStorage.session = session;
-
-        // Report that the new session was stored succesfully.
-        setTimeout(function() { app.ports.onSessionChange.send(session); }, 0);
-      });
-
-      window.addEventListener("storage", function(event) {
-        if (event.storageArea === localStorage && event.key === "session") {
-          app.ports.onSessionChange.send(event.newValue);
-        }
-      }, false);
-    </script>
-  </body>
-</html>
diff --git a/intro/part8/index.html b/intro/part8/index.html
deleted file mode 100644
index 7b6bea9..0000000
--- a/intro/part8/index.html
+++ /dev/null
@@ -1,41 +0,0 @@
-<!DOCTYPE html>
-<html>
-  <head>
-    <meta charset="utf-8">
-    <title>Conduit</title>
-
-    <link rel="apple-touch-icon" sizes="180x180" href="/assets/icons/apple-touch-icon.png">
-    <link rel="icon" type="image/png" sizes="32x32" href="/assets/icons/favicon-32x32.png">
-    <link rel="icon" type="image/png" sizes="16x16" href="/assets/icons/favicon-16x16.png">
-    <link rel="manifest" href="/assets/site.webmanifest">
-    <link rel="mask-icon" href="/assets/icons/safari-pinned-tab.svg" color="#5bbad5">
-    <meta name="msapplication-TileColor" content="#da532c">
-    <meta name="theme-color" content="#ffffff">
-
-    <!-- Import Ionicon icons & Google Fonts our Bootstrap theme relies on -->
-    <link href="//code.ionicframework.com/ionicons/2.0.1/css/ionicons.min.css" rel="stylesheet" type="text/css">
-    <link href="//fonts.googleapis.com/css?family=Titillium+Web:700|Source+Serif+Pro:400,700|Merriweather+Sans:400,700|Source+Sans+Pro:400,300,600,700,300italic,400italic,600italic,700italic" rel="stylesheet" type="text/css">
-    <!-- Import the custom Bootstrap 4 theme from our hosted CDN -->
-    <link rel="stylesheet" href="//demo.productionready.io/main.css">
-
-    <script src="elm.js"></script>
-  </head>
-  <body>
-    <script>
-      var app = Elm.Main.init({flags: localStorage.session || null});
-
-      app.ports.storeSession.subscribe(function(session) {
-        localStorage.session = session;
-
-        // Report that the new session was stored succesfully.
-        setTimeout(function() { app.ports.onSessionChange.send(session); }, 0);
-      });
-
-      window.addEventListener("storage", function(event) {
-        if (event.storageArea === localStorage && event.key === "session") {
-          app.ports.onSessionChange.send(event.newValue);
-        }
-      }, false);
-    </script>
-  </body>
-</html>
diff --git a/intro/part9/index.html b/intro/part9/index.html
deleted file mode 100644
index 9192b40..0000000
--- a/intro/part9/index.html
+++ /dev/null
@@ -1,39 +0,0 @@
-<!DOCTYPE html>
-<html>
-  <head>
-    <meta charset="utf-8">
-    <title>Conduit</title>
-
-    <link rel="apple-touch-icon" sizes="180x180" href="/assets/icons/apple-touch-icon.png">
-    <link rel="icon" type="image/png" sizes="32x32" href="/assets/icons/favicon-32x32.png">
-    <link rel="icon" type="image/png" sizes="16x16" href="/assets/icons/favicon-16x16.png">
-    <link rel="manifest" href="/assets/site.webmanifest">
-    <link rel="mask-icon" href="/assets/icons/safari-pinned-tab.svg" color="#5bbad5">
-    <meta name="msapplication-TileColor" content="#da532c">
-    <meta name="theme-color" content="#ffffff">
-
-    <!-- Import Ionicon icons & Google Fonts our Bootstrap theme relies on -->
-    <link href="//code.ionicframework.com/ionicons/2.0.1/css/ionicons.min.css" rel="stylesheet" type="text/css">
-    <link href="//fonts.googleapis.com/css?family=Titillium+Web:700|Source+Serif+Pro:400,700|Merriweather+Sans:400,700|Source+Sans+Pro:400,300,600,700,300italic,400italic,600italic,700italic" rel="stylesheet" type="text/css">
-    <!-- Import the custom Bootstrap 4 theme from our hosted CDN -->
-    <link rel="stylesheet" href="//demo.productionready.io/main.css">
-
-    <!-- We'll access localForage via JavaScript interop! -->
-    <script src="/assets/localForage.min.js"></script>
-
-    <script src="elm.js"></script>
-  </head>
-  <body>
-    <script>
-      localforage.getItem("session", function(session) {
-        // 👉 TODO: Instead of `null`, pass the session for Elm.Main's flags.
-        var app = Elm.Main.init({flags: session});
-
-        app.ports.storeSession.subscribe(function(session) {
-          localForage.setItem("session", session, function() {
-            app.ports.onSessionChange.send(session);
-          });
-        });
-    </script>
-  </body>
-</html>
