How do I master Data Structures in C?

Answer 1

https://www.geeksforgeeks.org/data-structures/
Though I use c++.
But geeksforgeeks is the best website/app for every kind of questions regarding programming be it algorithm, data structures or interview questions
I recommend you using the mobile app too.
https://play.google.com/store/apps/details?id=free.programming.programming

Answer 2

Rewa Mathur
Really helpful roadmap! Thank you!

Answer 3

To add to Saurabh Tiwari really good answer : practice, practice and some more practice
Try doing examples of them in practical use to begin with (hashmap and linked list for a traduction dictionary, ...) then try doing generic ones with either macros or void * (you can ask me if you need help by private message on sololearn, I went through this stuff ^^)