First of all, the coursee system is very excellent, especially the stickers that they offer, and those that contain thought and application to those who are explained in the lectures, secondly. As for follow-up, the teachers follow up first, and any student who asks for something responds to it third. The degree of comprehension varies from student to student according to the age, and does this student even have a computer and has some kind of love for computers or not, but the students’ comprehension is good