What are the resources to get good understanding of Data Structures & Algorithm from scratch?

Question

And which language should I opt to start learning DSA?

ps: I know C, C++, JAVA and python.

Answer 1

Umm, I would recommend the language which you use the most. Learning DSA in Java will be very hard but if you manage to learn and understand it, it can be very easy to grasp DSAs for other langs..
here is FreeCodeCamp's course: https://youtu.be/RBSGKlAvoiM