This is a lecture that goes beyond the simple implementation of functions for job seekers and early career professionals, and allows you to learn how to perform tasks such as CSR, SSR, static builds, deployment, and libraries. There are many good topics that will help you understand what you need to study to move up to the mid-level. Since the content is so broad, it is difficult to provide the depth and level of completion in the lecture, so you will need to explore the remaining parts on your own.