Learning Data Structures

I never took a class on data structures in college. So every time I ran to some kind of data structure discussions, I always had to struggle to understand all those concepts of lists and trees.  But last night, I came across this wonderful YouTube play-list from UC-Berkley on data structures. The professor is really good. I highly recommend someone like me, who is a Non-CS major but wants to understand the mysterious world of data structures, to watch the videos. The total length is around 30 hours. Lets learn some data structures this summer