diff --git a/README.md b/README.md
index a04b63a..663c40a 100644
--- a/README.md
+++ b/README.md
@@ -481,19 +481,22 @@ An updated and curated list of selected readings to illustrate High Scalability,
 * [Horizontal Scalability in Web Serving Tier of Airbnb](https://medium.com/airbnb-engineering/unlocking-horizontal-scalability-in-our-web-serving-tier-d907449cdbcf)
 
 ## Interview
-* [My Scaling Hero - Jeff Atwood (Read it for Endorphins before Inteview, JK)](https://blog.codinghorror.com/my-scaling-hero/)
-* [Anatomy of a System Design Interview](https://hackernoon.com/anatomy-of-a-system-design-interview-4cb57d75a53f)
-* [8 Things You Need to Know Before a System Design Interview](http://blog.gainlo.co/index.php/2015/10/22/8-things-you-need-to-know-before-system-design-interviews/)
-* [Top 10 System Design Interview Questions ](https://hackernoon.com/top-10-system-design-interview-questions-for-software-engineers-8561290f0444)
-* [Top 10 Common Large-Scale Software Architectural Patterns in a Nutshell](https://towardsdatascience.com/10-common-software-architectural-patterns-in-a-nutshell-a0b47a1e9013)
-* [How NOT to design Netflix in your 45-minute System Design Interview?](https://hackernoon.com/how-not-to-design-netflix-in-your-45-minute-system-design-interview-64953391a054)
-* [Netflix: What Happens When You Press Play?](http://highscalability.com/blog/2017/12/11/netflix-what-happens-when-you-press-play.html)
-* [System Design - Hired in Tech](https://www.hiredintech.com/classrooms/system-design/lesson/52)
-* [How to Ace a Systems Design Interview - Palantir](https://www.palantir.com/how-to-ace-a-systems-design-interview/)
-* [The Architecture Interview - Susan Fowler](https://www.susanjfowler.com/blog/2016/10/7/the-architecture-interview)
-* [OSI and TCP/IP Cheat Sheet (Short but Sweet)](http://jaredheinrichs.com/mastering-the-osi-tcpip-models.html)
-* [The Precise Meaning of I/O Wait Time in Linux](http://veithen.github.io/2013/11/18/iowait-linux.html)
-* [Notes on Distributed Systems for Young Bloods](https://www.somethingsimilar.com/2013/01/14/notes-on-distributed-systems-for-young-bloods/)
+* [Designing Large-Scale Systems](https://www.somethingsimilar.com/2013/01/14/notes-on-distributed-systems-for-young-bloods/)
+	* [My Scaling Hero - Jeff Atwood (Read it for Endorphins before Inteview, JK)](https://blog.codinghorror.com/my-scaling-hero/)
+	* [The Architecture Interview - Susan Fowler](https://www.susanjfowler.com/blog/2016/10/7/the-architecture-interview)
+	* [Anatomy of a System Design Interview](https://hackernoon.com/anatomy-of-a-system-design-interview-4cb57d75a53f)
+	* [8 Things You Need to Know Before a System Design Interview](http://blog.gainlo.co/index.php/2015/10/22/8-things-you-need-to-know-before-system-design-interviews/)
+	* [Top 10 System Design Interview Questions ](https://hackernoon.com/top-10-system-design-interview-questions-for-software-engineers-8561290f0444)
+	* [Top 10 Common Large-Scale Software Architectural Patterns in a Nutshell](https://towardsdatascience.com/10-common-software-architectural-patterns-in-a-nutshell-a0b47a1e9013)
+	* [Google Pro Tip: Use Back-Of-The-Envelope-Calculations To Choose The Best Design](http://highscalability.com/blog/2011/1/26/google-pro-tip-use-back-of-the-envelope-calculations-to-choo.html)
+	* [How NOT to design Netflix in your 45-minute System Design Interview?](https://hackernoon.com/how-not-to-design-netflix-in-your-45-minute-system-design-interview-64953391a054)
+* [Explaining Low-Level Systems (OS, Network, Storage, etc)](https://www.palantir.com/how-to-ace-a-systems-design-interview/)	
+	* [OSI and TCP/IP Cheat Sheet (Short but Sweet)](http://jaredheinrichs.com/mastering-the-osi-tcpip-models.html)
+	* [The Precise Meaning of I/O Wait Time in Linux](http://veithen.github.io/2013/11/18/iowait-linux.html)
+* ["What Happens When ...", "How x Do y"](https://www.glassdoor.com/Interview/What-happens-when-you-type-www-google-com-in-your-browser-QTN_56396.htm)
+	* [What Happens When You Type google.com into Browser and Press Enter?](https://github.com/alex/what-happens-when)
+	* [Netflix: What Happens When You Press Play?](http://highscalability.com/blog/2017/12/11/netflix-what-happens-when-you-press-play.html)
+	* [Transit and Peering: How Your Requests Reach GitHub](https://githubengineering.com/transit-and-peering-how-your-requests-reach-github/)
 
 ## Talks
 * [Distributed Systems in One Lesson - Tim Berglund, Senior Director of Developer Experience at Confluent](https://www.youtube.com/watch?v=Y6Ev8GIlbxc)