Fixed typos, added some online resources.

Author: christinatruong

exercises/3_CSS/index.html

@@ -8,7 +8,7 @@ <h1>CSS with Ladies Learning Code</h1>
 		<img src="images/llc.png" width="650" height="300" alt="LLC Logo" />
 
 		<h2>About me</h2>
-		<img src="images/christina_avatar.jpg" width="72" height="72" alt="Pearl Chen's Twitter avatar" />
+		<img src="images/christina_avatar.jpg" width="72" height="72" alt="Christina Truong's Twitter avatar" />
 		<p>My name is Christina Truong. I like 90s music and cupcakes.</p>
 		<p>My website is <a href="http://christinatruong.com">christinatruong.com</a>.</p>
 	</body>

index.html

@@ -1596,8 +1596,8 @@ <h2>Generic Container Tags</h2>
         <li><code>div</code> - An <span class="keyword">block</span> container.<br />
           Much like a paragraph, it creates a line break above and below to create a box.</li>
       </ul>
-<pre class="prettyprint">&lt;span&gt;I'm a span!&lt;/div&gt;
-&lt;div&gt;I'm another span!&lt;/div&gt;
+<pre class="prettyprint">&lt;span&gt;I'm a span!&lt;/span&gt;
+&lt;span&gt;I'm another span!&lt;/span&gt;
 </pre>
       <span>I'm a span!</span>
       <span>I'm another span!</span>
@@ -1641,8 +1641,8 @@ <h2>Semantic HTML Tags</h2>
 <pre class="prettyprint">&lt;header&gt;
   &lt;nav&gt;
     &lt;a&gt;Home&lt;/a&gt;
-    &lt;a"&gt;About&lt;/a&gt;
-    &lt;a"&gt;Contact&lt;/a&gt;
+    &lt;a&gt;About&lt;/a&gt;
+    &lt;a&gt;Contact&lt;/a&gt;
   &lt;/nav&gt;
 &lt;/header&gt;  
 &lt;section&gt;
@@ -1750,7 +1750,7 @@ <h2>Getting columns to be side-by-side</h2>
       <p>To get our two columns to be side-by-side, use the <code>float</code> property. Values can be <code>left</code>, <code>right</code>, or <code>none</code>.</p>
 <pre class="prettyprint">
 section {
-  width: 560px;
+  width: 640px;
   padding: 30px;
   border: 1px solid gray;
   <strong>float: left;</strong>
@@ -1984,15 +1984,18 @@ <h1>Additional Resources</h1>
 
     <!-- SLIDE 103: FTP -->
     <article class='slide slide-list'>
-      <h2>Books</h2>
+      <h3>Books</h3>
       <p><a href="http://htmlandcssbook.com/">HTML and CSS: Design and Build Websites</a> by Jon Duckett</p>
       <br />
-      <h2>Validating your HTML</h2>
+      <h3>Validating your HTML</h3>
       <div>
-        <p>One of the best ways to make sure that your HTML &amp; CSS is being done correctly is to run it through a validator.</p>
+        <p>One of the best ways to make sure that your HTML &amp; CSS is correct is to run it through a validator.</p>
         <p><a href="http://validator.w3.org/">HTML validator</a><br />
           <a href="http://jigsaw.w3.org/css-validator/">CSS validator</a></p>
       </div>
+      <h3>Online resources</h3>
+      <p><a href="http://learn.shayhowe.com/html-css/">A Beginners Guide to HTML & CSS</a><br>
+      <a href="http://dochub.io/#css/">Documentation for HTML, CSS and more</a></p>
     </article>
 
     <!-- SLIDE 104: TIPS -->