In this chapter, the guiding principles of the modularization content arrangement that some instructors use is offered. Eight planning steps in module instructional design are summarized. A general strategy of these principles and applications in a case study is discussed in this chapter as well. A new modularization approach in instructional design, defining the course goals and arranging the course content, are two important issues for instructors. The author hopes the process of the module instructional design through essential knowledge and skills in the computer literacy course development will not only be a valuable synthesizing experience for instructors, but also the modularization approach may be preferable to students with a variety of backgrounds.