I am very good with learning and creating in the the technology field. I want to learn how to build apps, mainly for android and other mainly mobile based OS. Speak to me in both layman and advanced terminology, and tell me about every program, language, or other aspect that YOU know of that would be beneficial to learning and building apps. Guides already made for this would help too. I'll accept any helpful direction at all. Though time consuming, I want to build apps from the ground up. I will have help from a friend who already knows a lot, but I still want to know from you too.