I studied steadily for about 9 months after work from Java Basics to Intermediate Course and first started Spring Framework. My understanding of code is definitely lacking, but it has improved a lot. I believe that if I proceed while studying the basics, I will be able to get started with Spring Boot by next year. I can't tell you how lucky I am to be able to get started with Instructor Kim Young-han's Java lecture. I will try to proceed with the Intermediate 2nd Collection after I become familiar with Java while studying Spring..ㅎㅎ Thank you.