I am a beginner in Spring :) He will teach you the general concepts of Spring. It may be difficult for beginners. What do you mean by saying that it may be difficult for beginners when it is an introductory lecture? Here, beginner means someone who does not know various concepts of Java. In Java, you should know at least <compilation concept> / <inheritance> / <interface>. It is difficult to start this lecture knowing only Java operations. Java Spring is famous for being vast and difficult among web frameworks. You need to prepare to some extent. On the other hand, if you know only the small concepts listed above, you will have no problem digesting it. Looking at the lecture reviews, it seems that there are mixed reviews, but I highly recommend it. It is good to briefly learn the three axes of Java Spring concepts: IoC / AOP / PSA. For in-depth content, I recommend watching the core concept lecture.