A new edited version of this book can be found here

I recently made some edits to clarify some things and clean up the presentation.
The basic content is still the same.

Click here for the new version of this book.

The URL for the new version is: https://y-rosenthal.github.io/rnotes/

The original version of the book can still be found http://yrosenthal.com/rnotes/theOldBook

The website at http://yrosenthal.com/rnotes/theOldBook still contains the original content without the new edits.