Update README.md

Author: armankhondker

README.md

@@ -43,6 +43,7 @@ This repository contains LeetCode resources to ace your coding interviews.
 
 ## Courses
 - [Grokking the Coding Interview](https://www.designgurus.io/course/grokking-the-coding-interview)
+- [Data Structures tutorial from a Google Engineer](https://www.youtube.com/watch?v=RBSGKlAvoiM)
 - [Meta Coding Interview Prep Course](https://www.coursera.org/learn/coding-interview-preparation)
 
 ## Mock Interviewing