I am studying along the roadmap! I first encountered Spring through the Spring introductory class, and through this lecture, I was able to learn about the basic principles of Spring! The class method of using Java code at first to proceed without Spring and applying Spring one by one was really helpful for me who was new to Spring! Also, when an error occurred, you showed me how to solve it, so I could feel that 'I can find errors and solve them like this'. I think live coding is also a good method because I can see Younghan's coding method right away! I will proceed with the remaining roadmaps one by one. Thank you for making a good lecture~