My favorite intro to R book is The Art of R Programming by Norman Matloff <a href="http:&#x2F;&#x2F;www.amazon.com&#x2F;The-Art-Programming-Statistical-Software&#x2F;dp&#x2F;1593273843" rel="nofollow">http:&#x2F;&#x2F;www.amazon.com&#x2F;The-Art-Programming-Statistical-Softwa...</a>