I am now doing printing in the automation industry. As an experienced person, I want to talk about my own views. Is it better to watch a video tutorial or to study on the spot? 1: The video tutorial is understandable, but there is no actual operation. 2. Learning PLC, it is suggested that the mode of theory+practice will be better, and the key is to do more hands-on practice and experiments. 3. Online video is useless and a waste of time. 4: Actually, I also went to several places. If I read Bafanghui, I will teach you all the instructions in a day or two, and I will explore the rest myself. If the depth is controlled, it can be digested bit by bit. Tell the theory first, and then give yourself time to do practical exercises. If you don't understand anything, ask the teacher directly to help you solve it. Ji Cheng's video tutorial looks simple and easy to understand, but it is a simple understanding in principle, and there is no actual operation. It is recommended that novices learn on the spot. You can find several institutions on the spot and compare them yourself first.