docs(jsx): update README files for compiler and fragments

exercises/03.using-jsx/01.solution.compiler/README.mdx

@@ -2,4 +2,37 @@
 
 <EpicVideo url="https://www.epicreact.dev/workshops/react-fundamentals/compiling-jsx/solution" />
 
+🦉 Let's break down the key changes in our `script` tag:
+
+1. `type="text/babel"` and `data-type="module"`:
+
+   - `type="text/babel"` tells Babel to transpile this script, allowing us to use JSX and modern JavaScript features.
+   - `data-type="module"` indicates that this script should be treated as a module after Babel transpilation. This enables us to use `import` statements.
+
+   We use both instead of just `type="module"` because browsers don't natively understand JSX. Babel needs to transform our code first, then it can be treated as a module.
+
+2. Importing React:
+   We've changed from:
+
+   ```javascript
+   import { createElement } from '/react.js'
+   ```
+
+   to:
+
+   ```javascript
+   import * as React from '/react.js'
+   ```
+
+   This imports all exports from React as a namespace called `React`. It's beneficial because:
+
+   - It provides access to all React APIs, not just `createElement`.
+   - When using JSX, the transpiler will convert JSX elements to `React.createElement` calls, so we need the `React` namespace in scope.
+
+🔍 To dive deeper into these concepts, check out these resources:
+
+- [📜 Babel documentation on browser usage](https://babeljs.io/docs/babel-standalone)
+- [📜 React documentation on JSX](https://react.dev/learn/writing-markup-with-jsx)
+- [📜 MDN on JavaScript modules](https://developer.mozilla.org/en-US/docs/Web/JavaScript/Guide/Modules)
+
 👨‍💼 Great! Now we're ready to start using JSX in our HTML file!

exercises/03.using-jsx/05.problem.fragments/README.mdx

@@ -2,13 +2,26 @@
 
 <EpicVideo url="https://www.epicreact.dev/workshops/react-fundamentals/fragments" />
 
-🦉 One feature of JSX that you'll find useful is called
-["React Fragments"](https://react.dev/reference/react/Fragment). It's a special
-kind of component from React which allows you to position two elements
-side-by-side rather than just nested.
+🦉 One feature of JSX that you'll find useful is called ["React Fragments"](https://react.dev/reference/react/Fragment).
 
-Let's say we wanted to do the same thing as above, except we didn't want the
-`container` `div`. So, we wanted to just create:
+React Fragments allow you to group multiple elements without adding an extra
+DOM node. This lets you return multiple elements side-by-side from a component
+without needing a wrapper div. It's useful for avoiding unnecessary markup
+that could affect styling or layout.
+
+We have currently the following code:
+
+```html
+<div className="container">
+	<p>Here's Sam's favorite food:</p>
+	<ul className="sams-food">
+		<li>Green eggs</li>
+		<li>Ham</li>
+	</ul>
+</div>
+```
+
+We want to do the same thing as above, except we don't want the `container` `div`. So, we want to just create:
 
 ```html
 <p>Here's Sam's favorite food:</p>