Our (and by “our,” we mean the Internet, as a collective) obsession with GIFs serves many purposes: immortalizing catchphrases, making pithy points, creating hilarious juxtapositions, churning out cat superstars. But the GIF can also be an effective educational tool, as evidenced by “NYC Basic Tips and Etiquette,” a wonderful new GIF series by New York-based artist Nathan W. Pyle. “I’ve lived in the city for 4 1/2 years now,” he explains on his blog, “and I’ve decided to start writing down some of the things I’ve learned in my time here.” His notes thus far are both accurate and important — particularly the one about the empty subway cars. (Good heavens. There are certain things you can’t unsee/unsmell.) Check out some of Pyle’s best GIF tips (GIps?) after the jump.