A difficult lecture for beginners I will write in detail as I had a hard time following it. 1. It uses PHP 5.x version, which is grammatically different from the existing PHP 7.0. Please keep this in mind. Additionally, apmsetup is used. 2. Since it is a "blind" follow-through, those who have not learned basic grammar will have to go through it and study it. That's why the total lecture time is less than 6 hours, but it took me about 4 days... 3. Personally,, whenever the part where a typo was corrected was cut out of the video, I remember struggling a lot because I didn't know English, so I don't think I can give it a full star rating. 4. I think it's a B+ or higher for practical videos. If you follow it with patience, you can say that you learned a lot. 5. Lastly, I would like to thank instructor Park Jeong-won for taking the time to watch the video.