add notes

Author: kentcdodds

epicshop/package-lock.json

@@ -75,6 +75,13 @@ export default function KodyProfileRoute() {
 
 🐨 Once you've got that, open <LinkToApp to="/users/kody" />.
 
+<callout-info>
+	Because this exercise deals with routing, you'll likely want to open the
+	playground app in an individual tab in your browser so you can see the URL
+	change and use the forward/backward buttons. Just click the "Open in New Tab"
+	icon.
+</callout-info>
+
 "Kody" should be displayed on the page. One fun fact, you'll also notice the
 Epic Notes logo in the header and the footer are on the page as well, even
 though you didn't render those yourself. That's because you're actually

exercises/02.routing/01.problem.routes/README.mdx

@@ -260,3 +260,10 @@ open in another tab to reference.
 At any time, remember if you get lost, you can run `npx remix routes` in the
 project directory to check the generated routes configuration based on your file
 system.
+
+<callout-info>
+	Because this exercise deals with routing, you'll likely want to open the
+	playground app in an individual tab in your browser so you can see the URL
+	change and use the forward/backward buttons. Just click the "Open in New Tab"
+	icon.
+</callout-info>