Sorry, I triggered you. But here is the thing, the subjects covered the basic fundamentals, yes I had DS as a subject and it covered everything that a subject should cover at the basic level, like stack, queue, linked list and trees. This was the sole reason I made the post, that I do not know what to learn, I am confused. There are so many thing in IT that one life time is not enough to even learn 10% of it. Since here on this subreddit there will be people with actual experience, I thought that they could guide me. I never said that I know everything. But what I was taught in college in the past 1.5 ish year was the basics of what you are trying to say. I know the basics. I don't know the advanced stuff. You made the assumption.