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@@ -105,10 +105,13 @@ A collection of videos based on distributed systems.
 - [Intro to Architecture and System Design Interviews](https://www.youtube.com/watch?v=ZgdS0EUmn70) - A youtube video with Jackson Gabbard with good info about system design interviews.
 
 - [System Design Introduction for Interview](https://www.youtube.com/watch?v=UzLMhqg3_Wc) - Tushar's intro to System Design.
+- [Distributed Systems](https://www.youtube.com/playlist?list=PLOE1GTZ5ouRPbpTnrZ3Wqjamfwn_Q5Y9A) - This is an introductory course in Distributed Systems made by Chris Colohan. He got PhD from Carnegie Mellon, then spent 10 years working at Google building distributed systems. 
 
 ## Advanced
 
 - [The evolution of Reddit Architecture](https://www.youtube.com/watch?v=nUcO7n4hek4) - Overview of how Reddit system design scaled. 
+- [6.824 Distributed Systems by MIT](https://www.youtube.com/playlist?list=PLrw6a1wE39_tb2fErI4-WkMbsvGQk9_UB) - Graduate level course on distributed systems from MIT (2020).
+- [CSE138 Distributed Systems by UCSC](https://www.youtube.com/playlist?list=PLNPUF5QyWU8O0Wd8QDh9KaM1ggsxspJ31) - Undergraduate course on distributed systems from UCSC (2020).
 
 # Tools
 
@@ -299,4 +302,4 @@ message broker written in erlang that also supports multiple messaging protocols
 - [Rails](https://github.com/rails/rails) - [46.2k ⭐] - Written in Ruby, Rails delivers quick apis from prototype to production in an efficient manner.
 - [Play Framework](https://github.com/playframework/playframework) - [11.6k ⭐] - Very fast, high throughput framework written in Scala/Java that is RESTful by default.
 - [Flask](https://github.com/pallets/flask) - [51.6k ⭐] - A lightweight Python Microframework for fast prototyping and production. 
-- [Django REST](https://github.com/encode/django-rest-framework) - [18.4k ⭐] - Written in Python, Django Rest is a powerful and flexible REST API. The efficiency and time to market resembles Rails.
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+- [Django REST](https://github.com/encode/django-rest-framework) - [18.4k ⭐] - Written in Python, Django Rest is a powerful and flexible REST API. The efficiency and time to market resembles Rails.