Without receiving any systematic education or studying, I just did 10 years of development work and decided that I could not become an expert, so I ran away and gave up my life as a developer. After wandering for 5 years, I got another chance to challenge myself and took the course. I have never done web programming, and I have only developed with the C language, so maybe that is why, but it is a course that leaves me with many questions about other languages, frameworks, interfaces, etc. I guess it is because there are many areas where I am lacking in following the course. I am starting the second act of my life as a developer by learning according to the roadmap of educator Kim Young-han. Thank you for sharing your valuable knowledge in this way.