Following the basic course, I took all of the intermediate course 1 lectures. The process of finding the principles was fun, and it was a lecture that helped me fill in the depth of Java that I lacked. [Reason to learn] This lecture also clearly explained the part about 'Why should I learn this?'. In preparation for the upcoming advanced course, I was impressed by the way the difficulty of the concepts was differentiated and the part that I needed to know now was explained in depth and the preparation for the next lecture was also done. In addition to the basic course that explained the parts that everyone had heard of but did not understand properly, it was a time to scratch the itch by covering concepts that I had heard of a lot but did not know properly. [More solid examples] In addition to the smooth lectures in the basic course, I was impressed by the solid examples, and the examples made me think that the depth of my thoughts increased as the difficulty level increased. In terms of the CSAT, it felt like looking at the evaluation center's problems rather than the mock exams on the market. [Highly recommended for those in the field] Many people in the field are developing with Java, but there may not be many who know it as deeply as you think. I also work with Spring Framework and Java, but I don't think I can confidently say that I know Java. I am sure that this lecture will be a time for those in the field to understand and utilize concepts that they did not know or could not confidently talk about. [Viewing the lecture more valuable] I think it was really hard to find any regrets this time. Since it is an 'online lecture', everything can be resolved. If it is difficult to keep up with Younghan's respectful typing speed, you can watch it at a slower speed or watch it again. I think the difficulty level has increased compared to the basic version, so a lot of review and understanding time is needed. In order for this lecture to be more valuable to us, I think a lot of review and understanding and thinking time is needed. Watching the next lecture is important, but it would be better to first try to understand it perfectly! [To Younghan] In the last lecture, I urged you to do the guitar. You said that your child will be born in May...and asked for a quick release.. Your child came two weeks early before you finished listening to the first part of Intermediate. The words, 'new but always together' really hit home. I'm so curious about how Younghan spent his personal time after becoming a father! I'm definitely short on time, but I'll try to follow along slowly and steadily.