I think I'm supposed to be reading right now, but I don't know where to buy my books

I just bought my ticket for Barcelona for Winter Break!!!

I had my economy of India class on Thursday. The professor spoke really fast and had a very heavy accent. I could barely understand what was going on, and English is my first language. He then started talking about time series, and everyone in the class had never heard of it (thank you T-Bags). The professor then explained it as "when you throw a rock into the water, and the ripples form, and then you throw another rock and you want to see if the ripples are the same, you throw many rocks in at once and then you see all of the ripples and there are so many ways to measure the ripples...." Everyone's jaws dropped, and I wanted so badly to pull up Megastat and show them that there are zero rocks involved.