IMO this is the best intro to R for people in the sciences. Lots of code that can be used as is and costs next to nothing.

https://www.amazon.com/Everyone-Advanced-Analytics-Graphics-Addison-Wesley/dp/013454692X/ref=sr_1_1?keywords=R+for+everyone&qid=1561954888&s=books&sr=1-1

Best, D. Booth

HI,

Have you checked out Andy Field's book?

https://www.amazon.co.uk/Discovering-Statistics-Using-Andy-Field/dp/1446200469

I also find the Quick R homepage

https://www.statmethods.net/

and the Quick R book quite helpful

https://www.manning.com/books/r-in-action-second-edition?a_bid=5c2b1e1d&a_aid=RiA2ed

Many thanks@lana Donrindt, Somantha and David

I'm not sure whether you are asking for a stats book that happens to use R or a book about R. I am assuming when you say you want to understand the fundamentals of R you mean actually learn more about R; not just how to use it, but why it is like what it is. I think for this Software for Data Analysis ( https://www.springer.com/gp/book/9780387759357 ) is the choice. This will tell you about the fundamentals of R (which is an implementation of S, so this really about S too) especially the philosophy behind it.

Thanks Daniel for your kind response

You are welcome Ngawang Chhogyel

You can look at:

https://www.statmethods.net/

https://www.amazon.co.uk/Discovering-Statistics-Using-Andy-Field/dp/1446200469

Thanks@ Mohammad

I really liked this book:

R for Data Science: Import, Tidy, Transform, Visualize, and Model Data - Wickham & Grolemund.

The introduction to RMarkdown was great!!

Thanks Kely

Hi Ngawang,

in the youtube channel of Mike Marin you find lots of step-by-step explanations and examples of different statistical analyses in R. From the very beginning to the top: https://www.youtube.com/playlist?list=PLqzoL9-eJTNBDdKgJgJzaQcY6OXmsXAHU