More about the textbook:

Have you ever wanted to learn how to conduct basic data analysis using the statistical programming language R in a friendly, non-technical introductory e-textbook, all for the grand cost of $0? If so, this free e-textbook is for you! It assumes no previous programming experience, and takes you from the basics of R programming to basic data analysis and visualization. The book also presents several chapters on research transparency & reproducibility, which are key to the ethical conduct of research. Finally, the book has several pictures of cats and other cute animals, so why not check it out today!

https://shaonl.github.io/Rbook/