updated readme.

README.md

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 # Real World Kubernetes
 This is a two part course with practical code examples about running Kubernetes in the real world.  If you want to learn how to run Kubernetes in the real world, this is the course to follow. 
 
+## Older Course Material
+I gave several courses on O'Reilly's platform and you may be looking for the code here and find it's organized slightly differently than you might expect it to be.  You can get the old stuff by doing: 
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+```
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+```
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 This is a revamp of my somewhat popular O'Reilly class EKS in the data center.  I've taken feedback from the hundreds of people who have taken the class to make it more applicable to the real world.  
 
 The class is available on [O'Reilly's platform](https://learning.oreilly.com/home/).  If you have a log in you can search for my name (vallard) there and watch it.  If not, feel free to use this guide and read along.