You may re-enter a course for 6 months after the course was started. Money-back guarantee Course lessons are complete with hypertext and color graphics. All courses have a link to the discussion forums. The instructors and other students participate in topic specific questions and answers. Students can learn by active participation in both asking and answering questions.
All courses have interactive quizzes.
Help from the instructor is available via e-mail. These features help add the benefits of instructor-led courses. A course specific resource page is available for each course. A quick reference page is available for each course.