adding some data structures implementation resources

README.md

@@ -32,6 +32,8 @@ But knowing the stuff will help you become better! :muscle:*
 
 ### Data Structures
 - :movie_camera: [UC Berkeley, Data Structures Course](https://archive.org/details/ucberkeley-webcast-PL-XXv-cvA_iAlnI-BQr9hjqADPBtujFJd)
+- [Foundations of Data Structures - EDX](https://www.edx.org/course/foundations-data-structures-iitbombayx-cs213-1x-0#!)
+- [Data Structures - Coursera](https://www.coursera.org/learn/data-structures)
 
 ### Numbers
 - :book: [How to Count](https://www.goodreads.com/book/show/12093869-how-to-count)