make note about ts

Author: kentcdodds

README.md

@@ -32,7 +32,7 @@
 
 ## Prerequisites
 
-- Basic understanding of HTML, CSS, JavaScript, and TypeScript
+- Basic understanding of HTML, CSS, and JavaScript
 - Install the [React DevTools](https://react.dev/learn/react-developer-tools)
 
 ## Pre-workshop Resources

exercises/README.mdx

@@ -17,3 +17,11 @@ use React, but _understand_ it. This will help you build better applications and
 be more effective at debugging when things go wrong.
 
 With that, let's get started!
+
+<callout-info>
+	NOTE: all the exercises in this workshop are in `index.html` files to keep
+	things as simple as possible. The JavaScript you write will be inside inline
+	`<script>` tags. This is just to keep things simple for this workshop, but in
+	other workshops you'll be writing TypeScript 100% to make things resemble real
+	world applications.
+</callout-info>