In my case, I first encountered Spring while listening to free Spring Boot bulletin board project lectures uploaded by other people on YouTube. When I first listened to it, I was so busy that I didn't know anything, but the problem was that even when I tried to modify and improve the code a little, I was stuck and didn't know anything. Even when implementing a simple bulletin board with the same function, the code writing method, environment settings, and build tools were different for each lecturer, so I think it was even more confusing. I had Toby's Spring book at home, but it was too difficult for me, who was new to Spring, to approach the book. Then, I happened to pay for and listen to Kim Young-han's basic lecture, and I definitely felt the difference. From the background explanation of the emergence of the technology to detailed explanations of why it is used in practice, various tips, and important content was clearly covered through repetition, and I was able to learn and master many development tips through live coding practice. After listening to the first lecture, I was convinced that I had to listen to the rest of the lectures, so I paid for them all. Sometimes I wonder if I'm listening at the same speed, but he speaks so fast that I don't have to worry about missing anything because he repeats important content. I'm so grateful that he lectures like this from Corin's perspective. I have a lot of lectures left to listen to, but I'll finish them with a grateful heart. Recently, a lecture on the core principles and utilization of Spring Boot is scheduled to open, so I'll definitely listen to that too. It may sound strange, but I received a lot of comfort from Professor Kim Young-han's positive energy while listening to the lecture. I hope you'll be happy and healthy in the future as well :)