I took the lecture with a little basic knowledge of R and no basic knowledge of statistics, but the lecturer first explained statistical calculation formulas step by step, then explained how to implement them by converting them into codes in R, and finally explained the order of functions that can be used in R, so I was able to learn the basic concepts of statistics and statistics using R at the same time. As the subtitle of Part (1) suggests, it seems like there is still a long way to go, but I am sad that the lecture is over. I hope to continue studying Parts (2)(3) in the future so that I can someday use R and statistical analysis in my thesis. I would like to thank the lecturer for providing such a high-quality lecture for free. Thanks to him, I learned a lot! (Oh, by the way, could you add video explanations to the regression analysis practice and multiple regression analysis sections of the blog?)