Draft of 2017-03-26
My book titled Learn R …as you learnt your mother tongue is nearly complete, but the text is not yet polished.
In the fifth draft version, published through Leanpub, approximately 95% of the book content is included.
The PDF of this updated draft of the book is available at http://leanpub.com/learnr for whatever price you would like to pay for it (including for free). However, paying even as little as 1€ for your copy would go a long way towards supporting the expenses of running this web site.
Status as of 2017-03-26. Except for the chapter on data manipulation, all chapters are close to their final form.
Draft of 2017-04-08
Two updates released to Leanpub on 4 April and 8 April, respectively. Chapter on data manipulation is now complete but text is still is rather rough.
Draft of 2017-04-14
More updates to file at Leanpub. Indexing of functions is mostly done. Polishing of text and code examples has started. A few additional code examples added. R package containing original data used in examples in the book is nearly ready for first release.