docs(aio): fix the broken docs guide

aio/content/guide/additional.md

@@ -0,0 +1,5 @@
+@title
+Additional techniques
+
+@description
+Learn important techniques such as how to secure, style, animate, and deploy your application.

aio/content/guide/core.md

@@ -0,0 +1,5 @@
+@title
+Core features of Angular
+
+@description
+Explore the core modules and features of Angular in this section of the guide.

aio/content/marketing/docs.html

@@ -1,25 +0,0 @@
-<h1>Angular Docs</h1>
-<h6>v 4.0.0</h6>
-<p>Learn about the latest updates to the documentation. View the Angular change log for enhancements, fixes, and breaking changes in Angular itself. If you're looking for Angular vs2 documents you'll find them at <a href="#">v2.angular.io</a></p>
-
-<div class="card-container clearfix">
-
-    <a href="../guide/quickstart" class="card">
-        <h2>Quickstart</h2>
-        <p>A short beginner guide explaining the basic concepts of Angular</p>
-        <p class="card-footer">View Quickstart</p>
-    </a>
-
-    <a href="..api" class="card">
-        <h2>Developer Guide</h2>
-        <p>An intermediuate development guide covering all major features of Angular</p>
-        <p class="card-footer">View Quickstart</p>
-
-    </a>
-
-    <a href="../api" class="card">
-        <h2>API Reference</h2>
-        <p>An advanced reference of all Angular Classes, Methods, etc.</p>
-        <p class="card-footer">View Quickstart</p>
-    </a>
-<div>

aio/content/marketing/docs.md

@@ -0,0 +1,48 @@
+@title
+Angular Docs
+
+@description
+
+<div class="card-container clearfix">
+
+    <a href="./guide/quickstart" class="card">
+        <h2>Quickstart</h2>
+        <p>A quick look at an Angular application.</p>
+        <p class="card-footer">View Quickstart</p>
+    </a>
+
+    <a href="guide/learning-angular" class="card">
+        <h2>Getting Started</h2>
+        <p>A beginner's guide to basic Angular concepts.</p>
+        <p class="card-footer">View Getting Started</p>
+    </a>
+
+    <a href="tutorial" class="card">
+        <h2>Tutorial</h2>
+        <p>The "Tour of Heroes" tutorial, a step-by-step.</p>
+        <p class="card-footer">View Tutorial</p>
+    </a>
+
+    <a href="api" class="card">
+        <h2>API Reference</h2>
+        <p>The developer's reference to Angular classes, methods, etc.</p>
+        <p class="card-footer">View API Reference</p>
+    </a>
+
+    <a href="guide/core" class="card">
+        <h2>Core Guide</h2>
+        <p>Core features of Angular.</p>
+        <p class="card-footer">View Core Guide</p>
+    </a>
+
+    <a href="guide/additional" class="card">
+        <h2>Additional Techniques</h2>
+        <p>Additional modules and techniques.</p>
+        <p class="card-footer">View Additional Techniques</p>
+    </a>
+
+<div>
+
+This is the Angular **version 4** documentation. See what's new in the [documentation changelog](guide/change-log). View the [Angular change log](https://github.com/angular/angular/blob/master/CHANGELOG.md) for enhancement and fixes to Angular itself.
+
+The Angular **version 2** documentation has been archived at [v2.angular.io](https://v2.angular.io "Angular v2 Docs").

aio/content/navigation.json

@@ -136,6 +136,7 @@
 
     {
       "title": "Core",
+      "url": "guide/core",
       "tooltip": "Learn the core capabilities of Angular",
       "children": [
         {
@@ -263,7 +264,8 @@
 
     {
       "title": "Additional Techniques",
-      "tooltip": "Other",
+      "url": "guide/additional",
+      "tooltip": "Additional modules and techniques",
       "children": [
         {
           "url": "guide/aot-compiler",