I'm taking my Calc 3 course and we began to get down and dirty with the basics of topology in Rn (open and closed sets, conexity, etc), its like a fucking acid trip, here I am asking myself questions like "Is the exterior of A a subset of the interior of its exterior?" at fucking three in the morning.

Don't get me wrong, I'm in love with the subject and how much i have to twist and turn my sophomore brain, it's a feeling similar to when I first came to grasp the ?-? definition of a limit but I really wanna know if any of you had the same troubles when first learning about this.