I wanted to study Langchain, so I immediately took a free lecture on Inflearn. It was easy to follow because the code was explained line by line, and the Wikidocs and GitHub practice file materials were detailed, so the materials alone were sufficient, but it was definitely easier to understand if I listened to them along with the lecture! I'm curious about the cases of practical use, so I'm going to take the next lecture. Thank you for the great lecture.