Update README.md

Author: Joseph Luce

system_design/README.md

@@ -1,12 +1,19 @@
-### Grokking the System Design Interview
-Start here.
-- https://www.educative.io/collection/5668639101419520/5649050225344512
+I'll be using this to fill in some content that was not covered enough.
+Other than that, this will be just a reference for other material that will better explain system design than I can.
+
+I would recommend starting with Grokking the System Design Interview eCourse.
+Worth the money and will fill in a lot of the gaps for a beginner to system design.
+Use the YouTube channels as supplement and Google's SRE eBook for context to some real life scenario debugging.
+
+## Start Here
+- [Grokking the System Design Interview](https://www.educative.io/collection/5668639101419520/5649050225344512)
 - https://github.com/donnemartin/system-design-primer
 
-### YouTube suggestions
+## YouTube suggestions
 I recommend checking this guy's channel (Success in Tech). I would actually avoid Tushar Roy's channel, the quality of system design isn't on par. Another possible channel is Gaurav Sen.
 - https://www.youtube.com/channel/UC-vYrOAmtrx9sBzJAf3x_xw
 - https://www.youtube.com/channel/UCRPMAqdtSgd0Ipeef7iFsKw
 
-### Other Resources
+## Other Resources
 - http://highscalability.com/
+- [Free Google SRE eBook](https://landing.google.com/sre/sre-book/toc/)