The fifth edition of the book “Principles of Economics-Partial Analysis”, written by Dr. Majid El-Monif and published by the Obeikan Library, was published in 2022. It is a course in some of the Kingdom’s universities covering consumer theories, establishment, production, costs, supply, demand and others. The book contains real-life examples and questions and exercises developed in a platform with the addition of a barcode within the main book to which the student and professor communicate.