The course is structured as an introductory session followed by three modules, with new concepts introduced in each module, and put into practice by building an Android app. There is no fixed timescale for each module, as the time taken will depend on class size and ability; a rough estimate is three to six weeks per module, based on a weekly double class. However, the emphasis should be on ensuring students understand what they are doing, rather than on completing the modules to a predetermined timetable.