Link architecture and code walkthrough videos in docs

docs/book/src/developer/guide.md

@@ -221,3 +221,12 @@ Now you can [create CAPI objects][qs]!
 To test another iteration, you'll need to follow the steps to build, push, update the manifests, and apply.
 
 [qs]: https://cluster-api.sigs.k8s.io/user/quick-start.html#usage
+
+## Videos explaining CAPI architecture and code walkthrough
+
+- CAPI components and architecture
+	- https://youtu.be/npFO5Fixqcc
+	- https://youtu.be/i6OWn2zRsZg
+
+- Code walkthrough
+	- CAPD: https://youtu.be/67kEp471MPk