diff --git a/docs/contributing/index.html b/docs/contributing/index.html
index 1a745f6a27f..968802e93d5 100644
--- a/docs/contributing/index.html
+++ b/docs/contributing/index.html
@@ -350,7 +350,8 @@ <h2 id="learning-vitess">Learning Vitess</h2>
 <li><p>Read the <a href="/overview/concepts.html">Vitess concepts</a> and the <a href="/user-guide/sharding.html">Sharding</a> page.</p>
 
 <ul>
-<li>After reading, try to answer the following question (click expand to see the answer):
+<li>We also recommend to look at our <a href="/resources/presentations.html">latest presentations</a>. They contain many illustrations which help understanding how Vitess works in detail.</li>
+<li>After studying the pages, try to answer the following question (click expand to see the answer):
 <details> 
 <summary>
 Let&#39;s assume a keyspace with 256 range-based shards: What is the name of the first, the second and the last shard?
diff --git a/docs/sitemap.xml b/docs/sitemap.xml
index 6f005b392b2..cc6d17b2e1a 100644
--- a/docs/sitemap.xml
+++ b/docs/sitemap.xml
@@ -22,25 +22,25 @@
     <loc>http://vitess.io/user-guide/horizontal-sharding.html</loc>
   </url>
   <url>
-    <loc>http://vitess.io/overview/</loc>
+    <loc>http://vitess.io/about/</loc>
   </url>
   <url>
-    <loc>http://vitess.io/about/</loc>
+    <loc>http://vitess.io/search/</loc>
   </url>
   <url>
-    <loc>http://vitess.io/terms/</loc>
+    <loc>http://vitess.io/overview/</loc>
   </url>
   <url>
-    <loc>http://vitess.io/</loc>
+    <loc>http://vitess.io/getting-started/</loc>
   </url>
   <url>
-    <loc>http://vitess.io/search/</loc>
+    <loc>http://vitess.io/contributing/</loc>
   </url>
   <url>
-    <loc>http://vitess.io/getting-started/</loc>
+    <loc>http://vitess.io/terms/</loc>
   </url>
   <url>
-    <loc>http://vitess.io/contributing/</loc>
+    <loc>http://vitess.io/</loc>
   </url>
   <url>
     <loc>http://vitess.io/user-guide/introduction.html</loc>
diff --git a/docs/user-guide/sharding.html b/docs/user-guide/sharding.html
index 7bbb59ec37a..d0c609af801 100644
--- a/docs/user-guide/sharding.html
+++ b/docs/user-guide/sharding.html
@@ -311,8 +311,9 @@ <h3 id="supported-operations">Supported Operations</h3>
 
 <p>With these features, you can start with a single keyspace that contains
 all of your data (in multiple tables). As your database grows, you can
-move tables to different keyspaces and shard some or all of those keyspaces
-without any real downtime for your application.</p>
+move tables to different keyspaces (vertical split) and shard some or
+all of those keyspaces (horizontal split) without any real downtime
+for your application.</p>
 
 <h2 id="range-based-sharding">Range-based Sharding</h2>