diff --git a/books/dev.yml b/books/dev.yml
index 2e0cdab079f9f8a48eebdd7cdabcc435a5c89f56..6dfade769c3655f35b751b5c958c1ac39ff5235d 100644
--- a/books/dev.yml
+++ b/books/dev.yml
@@ -1,6 +1,7 @@
 name: Developer guide
 weight: 10
 description: For CiviCRM developers
+category: Core
 langs:
     en:
         repo: 'https://github.com/civicrm/civicrm-dev-docs'
diff --git a/books/user.yml b/books/user.yml
index b9a237375b13667d1cb1c829b00b492fdb9f6201..fe833f985a085e5186bb8ee0ba75b8793794b86b 100644
--- a/books/user.yml
+++ b/books/user.yml
@@ -1,6 +1,7 @@
 name: User guide
 weight: -100
 description: Aimed at day to day users of CiviCRM.
+category: Core
 langs:
     en:
         repo: 'https://github.com/civicrm/civicrm-user-guide'
diff --git a/src/AppBundle/Controller/ReadController.php b/src/AppBundle/Controller/ReadController.php
index c76be285873e1a13c38d8d32e8a8ccc6fffb87b1..ddedd20c06956332e6d7204e95382b954b956c36 100644
--- a/src/AppBundle/Controller/ReadController.php
+++ b/src/AppBundle/Controller/ReadController.php
@@ -11,9 +11,14 @@ class ReadController extends Controller {
    * @Route("/")
    */
   public function HomeAction() {
+    /** @var \AppBundle\Model\Library $library */
+    $library = $this->get('library');
+
     return $this->render(
-        'AppBundle:Read:home.html.twig',
-        array('library' => $this->get('library'))
+        'AppBundle:Read:home.html.twig', array(
+          'core_books' => $library->getBooksByCategory('Core'),
+          'extensions_books' => $library->getBooksByCategory('Extensions'),
+        )
     );
   }
 
diff --git a/src/AppBundle/Model/Book.php b/src/AppBundle/Model/Book.php
index 3a9aa692de090e4ee46480aa3ea4695e10cd5fb9..128dfdd98cb07e1fd24c3cab82cba9ed061a9c17 100644
--- a/src/AppBundle/Model/Book.php
+++ b/src/AppBundle/Model/Book.php
@@ -33,6 +33,12 @@ class Book {
    */
   public $weight;
 
+  /**
+   *
+   * @var string (e.g. "Core", "Extensions") Should be in sentence case
+   */
+  public $category;
+
   /**
    * Creates a book based on a yaml conf file
    *
@@ -49,6 +55,8 @@ class Book {
     foreach ($yaml['langs'] as $code => $languageData) {
       $this->languages[] = new Language($code, $languageData);
     }
+    $category = isset($yaml['category']) ? $yaml['category'] : "Extensions";
+    $this->category = ucwords($category);
   }
 
   /**
diff --git a/src/AppBundle/Model/Library.php b/src/AppBundle/Model/Library.php
index 84a4ec28b0237def91979990088749ed4f39092e..125643e19f2c5b2cad8aac446c1574932a611ff0 100644
--- a/src/AppBundle/Model/Library.php
+++ b/src/AppBundle/Model/Library.php
@@ -99,6 +99,23 @@ class Library {
     return $chosen;
   }
 
+  /**
+   * Gives an array of book objects which match a given category
+   *
+   * @param string $category
+   *
+   * @return array of Book objects
+   */
+  public function getBooksByCategory($category) {
+    $books = array();
+    foreach ($this->books as $book) {
+      if ($book->category == $category) {
+        $books[] = $book;
+      }
+    }
+    return $books;
+  }
+
   /**
    * See which books/languages are using a given repository.
    *
diff --git a/src/AppBundle/Resources/views/Read/book_list.html.twig b/src/AppBundle/Resources/views/Read/book_list.html.twig
index f69d5d12dc7acfde81efa8450e9e8bd69ee20479..27900ef7f8ea01edad16b8ade8c8832154f5a861 100644
--- a/src/AppBundle/Resources/views/Read/book_list.html.twig
+++ b/src/AppBundle/Resources/views/Read/book_list.html.twig
@@ -1,5 +1,5 @@
 <ul class="books">
-{% for book in library.books %}
+{% for book in books %}
   <li class="book">
     <span class="name">
       {% if book.isMultiLanguage or book.languages|first.isMultiVersion %}
@@ -15,7 +15,7 @@
     {% if book.isMultiLanguage %}
       {% include 'AppBundle:Read:language_list.html.twig' %}
     {% elseif book.languages|first.isMultiVersion %}
-      {% include 'AppBundle:Read:version_list.html.twig' 
+      {% include 'AppBundle:Read:version_list.html.twig'
          with {language: book.languages|first}  %}
     {% endif %}
   </li>
diff --git a/src/AppBundle/Resources/views/Read/home.html.twig b/src/AppBundle/Resources/views/Read/home.html.twig
index 94aeb6d84a3b92eab39d72493001d18df05efafa..628fb4cbc2f13ea53b987a6fb75b0e8a70a24d11 100644
--- a/src/AppBundle/Resources/views/Read/home.html.twig
+++ b/src/AppBundle/Resources/views/Read/home.html.twig
@@ -3,26 +3,30 @@
 {% block title %}CiviCRM Documentation{% endblock %}
 
 {% block body %}
-  
+
 <a href="https://civicrm.org">CiviCRM home</a>
 
 <h1>CiviCRM Documentation</h1>
 
 <p>CiviCRM offers community contributed documentation in the form of digital
-  <em>books</em>, listed below. We encourage everyone to 
+  <em>books</em>, listed below. We encourage everyone to
   <a href="https://docs.civicrm.org/dev/en/latest/documentation/">
     help contribute to documentation</a>.</p>
 
-<p><em>Note: some documentation has not yet been moved into book format and 
-    can still be found on our 
+<p><em>Note: some documentation has not yet been moved into book format and
+    can still be found on our
     <a href="https://wiki.civicrm.org/confluence/display/CRMDOC/CiviCRM+Documentation">wiki</a>
-    while it awaits migration. In particular, information about 
+    while it awaits migration. In particular, information about
     <a href="https://wiki.civicrm.org/confluence/display/CRMDOC/Installation+and+Upgrades">
       installation and upgrades</a>
     is still on the wiki.</em></p>
 
-<h2>Books</h2>
+<h2>Core Books</h2>
+
+{% include 'AppBundle:Read:book_list.html.twig' with {books: core_books} %}
+
+<h2>Extensions Books</h2>
 
-{% include 'AppBundle:Read:book_list.html.twig' %}
+{% include 'AppBundle:Read:book_list.html.twig' with {books: extensions_books} %}
 
 {% endblock %}