This lecture is very appealing because it allows beginners who are completely new to programming to learn how programs are executed, and it allows programmers who are new to Java to get a taste of the big picture of Java. The lecture itself is helpful, but more than anything, it is an explanation lecture of the textbook's separate book, 'Pre-Lessons', so if you use the Pre-Lessons book as a notebook and look at this book, it will be a very helpful lecture. For those who are new to Java or have just taken their first steps into programming with HTML, CSS, etc., this course will be a great experience to open the door to full-fledged programming.