Computer skills are a key set of skills and knowledge that are acquired through primary education, but older generations did not have the opportunity to encounter them in the same way that children do now. Today, more than ever, in the social and business sense, great emphasis is placed on computer literacy. It is therefore not surprising that in this day in age many people decide to enroll in courses and take part in additional education in adulthood. However, educational content aimed at adult students must be different from one presented to children and young people. This difference is dictated above all by a higher level of development and a style of learning that is specific to individual capabilities, preferences and views of the world which adults have already developed throughout their lives. In this thesis, within the theoretical part, I will explain the differences in the way adults learn compared to children and young people, with an emphasis on the necessary adjustments in the approach, treatments and education programs for adults. Theoretically, I will go through the basics of instructional design, its types and role in the learning process and in the process of creating motivation, while taking into account the development of new technologies that require changes in the presentation and design of content. Within the research part of this paper, I will touch on the peculiarities related to the presentation of IT knowledge and skills for adults using examples from Croatia, and bring insight into existing programs, their instructional designs and the scope of their application.