Add complete intro section and resolve merge conflicts of mini-quiz placeholders

Author: elPiablo

pages/lessons/projects/3.mdx

@@ -36,13 +36,13 @@ In the previous lesson, we talked about NFTs and their use cases. Unlike traditi
 ![1_diagram.png](/assets/lessons/3/1_diagram.png)
 
 {/* WARM-UP QUESTIONS */}
-<SideDrawer buttonText="Warm-up Questions" title="Some previous knowledge, some prediction">
-      <Question question="lesson-2/1-intro/Q1" />
-      <Question question="lesson-2/1-intro/Q2" />
-      <Question question="lesson-2/1-intro/Q3" />
-      <Question question="lesson-2/1-intro/Q4" />
-      <Question question="lesson-2/1-intro/Q5" />
-</SideDrawer> 
+SideDrawer buttonText="Checkpoint Questions" title="Creating a Robust Development Environment">
+      <Question question="lesson-3/<# of section block+section name/Q1" />
+      <Question question="lesson-3//Q2" />
+      <Question question="lesson-3//Q3" />
+      <Question question="lesson-3//Q4" />
+      <Question question="lesson-3/-/Q5" />
+</SideDrawer>
 <br/>
 **Now that we have set the stage, it's time to dive into the exciting world of tiered NFTs and uncover the unique superpowers they possess. By the end of this tutorial, you will have gained a wealth of knowledge and accomplished the following steps**:
 
@@ -347,6 +347,15 @@ contract TierNFT is ERC721 {
 <br/>
 
 CHECKPOINT QUESTIONS ⁉️ <br />
+<SideDrawer buttonText="Checkpoint Questions" title="Creating a Robust Development Environment">
+      <Question question="lesson-3/<# of section block+section name/Q1" />
+      <Question question="lesson-3//Q2" />
+      <Question question="lesson-3//Q3" />
+      <Question question="lesson-3//Q4" />
+      <Question question="lesson-3/-/Q5" />
+</SideDrawer>
+<br/>
+
 PART 3 
 
 ### Create a (simple) tokenURI function