This video provides an introduction to what DS are and how they're useful.
Some of the most important data structures are
Array
Linked list [Link to detailed page]
Stack, Queue
Hash
Tree [Link to detailed page]
BST
Heap
You'll get a quick intro to most of these in this video. We'll go into detail for each of these in our DSA packs.
This detailed article starts with a real life story of an algorithm that proved critical in saving lives, and further goes on to introduce algorithms, DS and how you should go about learning these. Note: It also includes the Time Complexities of data structures.
This large video course provides a more detailed understanding of some of the important data structures. Rather than watching the whole thing, you should bookmark this course, and refer to the timestamps provided in the video's description to watch topicwise sections when you start each topic.