I am already familiar with other languages (JavaScript, Python), but I am not familiar with Java, so I took the Java Basics course as a prerequisite and listened to it to get started with Spring. However, I feel a lot of regret. I listened to it more than 3 times just in case, but I still feel regret. 1. IntelliJ, Maven, etc., when learning something, beginners tend to have difficulties with these environmental factors, but they assume that they already know these things and skip them, 2. (Even if it is not an environmental factor) when the explanation is a little more detailed, they recommend that you take Gi-seon's other paid lectures for a more detailed explanation, and skip over them. Many parts are 'due to time constraints' And I personally regret that you skipped it because it was an introductory lecture. This is the most introductory lecture, but if the introductory lecture is skipped like this, I feel frustrated about how I should start Spring. (It's similar to a new applicant thinking, "If everyone only wants experienced people, where can I get my experience?" hehe) You said it was due to time constraints, but students who feel it's too easy will probably skip it at an appropriate level and listen. Therefore, I thought it would have been better if you had given it at the level of a beginner since it's an introductory lecture. I think it would be more effective to listen to this lecture as a quick review after finding and listening to another introductory lecture rather than as an introductory lecture. For your information, I subscribe to Giseon's YouTube channel and am a fan. Although this lecture was disappointing as an introductory lecture, I sincerely thank you for uploading the free lecture, and I hope you will continue to provide good lectures in the future. I will come back to review after building up some Spring concepts. --- I came back after building up the basics in another Spring lecture in Infraon and re-took it for review. Now I understand. It seems like a lot of explanation was omitted for an introductory lecture. ㅠㅠ