Online learning has its origins in the 1960s with early programs like PLATO and Sketchpad, and has grown significantly over the past few decades to become widely used in K-12 education, higher education, and corporate training. It offers benefits like convenience, flexibility, and lower costs compared to traditional in-person learning. Successful online students tend to be self-directed, motivated, comfortable with technology, and able to stay on task without face-to-face instruction.