All GDA On-Line self-paced courses are offered as individual and sequential modules, so that you can learn a specific sales skill or set of techniques at each sitting.  There may be as few as two, or as many as eight, modules within a single course. The estimated "seat time" of each module (including instructor narration, video examples, quizzes and final exam certification) can range from 30 to 45 minutes.  In addition the modules are arranged in prerequisite order, with a downloadable Personal Study Guide in the first module of each course.