Updated links to the Scrimba material

book-2-the-invisible-web/README.md

@@ -24,7 +24,7 @@ Making as much progress on JavaScript is **critical** to your success early in t
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         <p class="listItem__header">Part 2</p>
         <p>Now that you have learned the basics of writing and debugging JavaScript, you can watch an experienced developer review some of the concepts, and try your hand at some interactive challenges.</p>
-        <a target="_blank" href="https://scrimba.com/learn/introtojavascript">Scrimba: Intro to JavaScript</a>
+        <a target="_blank" href="https://scrimba.com/learn-javascript-c0v">Scrimba: Learn JavaScript</a>
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book-3-the-visible-web/README.md

@@ -23,20 +23,20 @@ It's fun.
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         <p class="listItem__header">Part 1</p>
         <p>This course shows you how to use some popular HTML elements for building a web page. There is some CSS code, but the focus is on HTML.</p>
-        <a target="_blank" href="https://scrimba.com/learn/html">Scrimba: Introduction to HTML</a>
+        <a target="_blank" href="https://scrimba.com/html-css-crash-course-c02l">Scrimba: HTML and CSS Crash Course</a>
     </li>
     <li class="listItem listItem--doubleItems">
         <p class="listItem__header">Part 2</p>
-        <p>The introduction to CSS course digs into the foundations of Cascading Style Sheets and shows you all of the features that developers use most often.</p>
-        <a target="_blank" href="https://scrimba.com/learn/introtocss">Scrimba: Introduction to CSS</a>
+        <p>Continue your journey by learning more about Flexbox, a feature of CSS that enables dynamic and powerful layouts on a web page.</p>
+        <a target="_blank" href="https://scrimba.com/learn-flexbox-c0k">Scrimba: Learn Flexbox</a>
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     <li class="listItem listItem--doubleItems">
         <p class="listItem__header">Part 3</p>
-        <p>The course takes you on a journey on how to combine HTML structure, and CSS fundamentals, and ends with introducing you to Flexbox for making creative web page layouts.</p>
-        <a target="_blank" href="https://scrimba.com/learn/htmlcss">Scrimba: HTML &amp; CSS Crash Course</a>
+        <p>Time to build some more HTML and CSS projects to deepen your learning.</p>
+        <a target="_blank" href="https://scrimba.com/learn-html-and-css-c0p">Scrimba: Learn HTML and CSS</a>
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     <li class="listItem listItem--doubleItems">
         <p class="listItem__header">Part 4</p>