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README.md

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-## Easy
+
+## Fundamentals
 
 - [Hinted Handoff](https://systemdesign.one/hinted-handoff/)
 - [Consistency Patterns](https://systemdesign.one/consistency-patterns/)
 - [Gossip Protocol](https://systemdesign.one/gossip-protocol/)
 - [Service Discovery](https://systemdesign.one/what-is-service-discovery/)
-- [Back of the Envelope](https://systemdesign.one/back-of-the-envelope/)
+- [Consistent Hashing](https://systemdesign.one/consistent-hashing-explained/)
+
+
+## Data Structures
+
 - [Quotient Filter](https://systemdesign.one/quotient-filter-explained/)
 - [Bloom Filter](https://systemdesign.one/bloom-filters-explained/)
-- [Consistent Hashing](https://systemdesign.one/consistent-hashing-explained/)
-- [How to Troubleshoot if You Can’t Access a Particular Website?](https://systemdesign.one/how-to-troubleshoot-if-you-cannot-access-a-website/)
-- [What Happens When You Type a URL Into Your Browser?](https://systemdesign.one/what-happens-when-you-type-url-into-your-browser/)
-- [System Design Interview Cheat Sheet](https://systemdesign.one/system-design-interview-cheatsheet/)
-
 
 ## Deep Dive
 
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 - [URL Shortener](https://systemdesign.one/url-shortening-system-design/)
 
 
-## Misc
+## Case Studies
 
+
+
+## Miscellaneous
+
+- [Back of the Envelope](https://systemdesign.one/back-of-the-envelope/)
+- [How to Troubleshoot if You Can’t Access a Particular Website?](https://systemdesign.one/how-to-troubleshoot-if-you-cannot-access-a-website/)
+- [What Happens When You Type a URL Into Your Browser?](https://systemdesign.one/what-happens-when-you-type-url-into-your-browser/)
 - [Software Engineer Interview Learning Resources](https://systemdesign.one/software-engineer-interview-learning-resources/)
 - [System Design Interview Cheat Sheet](https://systemdesign.one/system-design-interview-cheatsheet/)