Although this lecture is for beginners, it seems to be a good lecture for reviewing the main concepts for practitioners in their second or third year. Among the numerous theories and papers on deep learning, the important core concepts are organized in a well-organized manner, and the lectures are separated by subconcept, making it easy to find the content you need. It was also helpful for my work because it explained the concepts as well as the implementation in an easy-to-understand manner. I wish I had taken this lecture when I was a college student, but I regret why I only took this lecture now. I recommend it to those who want to grasp both concepts and implementation.