Hello, Yeo Sang-gil First of all, thank you for your valuable opinion. 1. This lecture does not provide separate example materials, but the necessary content is covered through practice within the lecture. 2. The practice examples are explained in detail according to the development tool so that students can easily follow each step, and please understand that separate examples or quizzes are not provided. 3. The practice environment configuration lecture for Windows users is provided separately as a “Configuring the practice environment in Windows” lecture, so you will be able to learn smoothly in the Windows environment through that lecture. If you have any difficulties in configuring the terminal environment for practice in the Windows environment, please leave a question in the lecture and we will help you. We apologize for any inconvenience and will continue to strive to provide better lectures. Thank you.