The best teachers are always learning, be it on their own or through credit courses. One of the most convenient ways to learn what you want when you want at the right price (free) is through Coursera. Maybe you or your students want to jump into songwriting, explore digital signal processing, take on quantum physics, learn about comic books, or discover if plants have senses. You’ll find courses on these topics and more in the new Coursera catalog. Check it out because you won’t believe how much is there for you and your students—cryptography, nanotechnology, Common Core, Surviving Your Rookie Year of Teaching, genetics, critical thinking, bioelectricity, Latin American Culture, Malicious Software, English Composition . . .