added youtube video link)

Author: felixyu9

README.md

@@ -1,6 +1,16 @@
 # nodejs-express-on-aws-ec2
 
-This repo hosts the source code for my YouTube tutorial on CI/CD from Github to an AWS EC2 instance via CodePipeline and CodeDeploy. This tutorial uses a node.js express app as an example for the demo.
+This repo hosts the source code for my YouTube tutorial on CI/CD from Github to an AWS EC2 instance via CodePipeline and CodeDeploy (https://www.youtube.com/watch?v=Buh3GjHPmjo). This tutorial uses a node.js express app as an example for the demo.
+
+I also created a video to talk about how to fix some of the common CodeDeploy failures I have run into (https://www.youtube.com/watch?v=sXZVkOH6hrA). Below are a couple of examples:
+
+```
+ApplicationStop failed with exit code 1
+```
+
+```
+The overall deployment failed because too many individual instances failed deployment, too few healthy instances are available for deployment, or some instances in your deployment group are experiencing problems.
+```
 
 ===========================