This is the most satisfying lecture I've taken in recent years. - The lecturer gives a professional lecture based on his long experience - But he explains it really easily for non-IT majors. It's really easy - But it's so useful. All the terms and basic explanations needed for IT work are here Not only for developers, but also for those who work in the IT field but say they don't have a background I hope you take all of these lectures. It's almost a required lecture.