I am a student and I was developing in a different field, but I got interested in web backend and changed my course in a hurry in July of this year. Since it was late, I needed the best learning method, so I chose online lectures for the first time in my life and chose Mr. Kim Young-han's Spring lecture. Since it was late, I worked hard and followed along with live coding without fail, and I organized what I learned and applied it to my personal projects. If I didn't know something during the process, I thought deeply on my own and if I couldn't find an answer, I left a question through Infraon, and he always kindly answered me. As a result, I got a job at one of Nekaraku, and I personally wanted to go on a ship and meet the teacher once, lol.. That's what happened. I took the Spring lecture (I haven't taken the advanced part yet) + JPA partly, and it was very helpful. For those who are new to Spring, I think it's a safe, reliable, and good lecture to start with, like training wheels on a bicycle. Although I paid for the lecture myself, I am really grateful to the teacher.