Hi, all. Normally my friends and family come to me for advice on cell phones and computers, so you're my last resort. (And probably the most knowledgeable as well. . .) I'm a college professor, and in the evenings, I teach online. It's Communication (or Speech Communication); the students are supposed to submit their speeches to an unlisted youtube for me to grade them. (Juggling all of that on a 13 inch screen is kind of tough anyway. The vidoes aren't casting as well as they used, but I understand that if I had Apple TV, I could duplicate my screen. Can I extend it as well? Any advice I can get would be welcomed! Thanks in advance!