(Why do data analysis? What is application based data analysis? What are the methods of learning data analysis? Like websites, books or something? In fact, data analysis is not so mysterious, but the industry has not systematically introduced this field to new people. This course hopes to help those who are interested in understanding data analysis and working in data analysis positions, and help you solve the above problems. This course is suitable for novices in data analysis, product managers, operators and marketers, hoping to improve their data analysis ability!)