Self-paced learning is taken whenever the learner wants for how long she or he wants, and requires only an Internet connection.

instructor-led classroom is live, face-to-face training in which the students and the instructor gather at the same time and in the same location

instructor-led eLearning, sometimes called virtual eLearning, is a live, synchronous event in which students and instructor meet at the same time in different locations using an internet connection and telephone.