These are the examples and exercises for the book "OCaml from the Very Beginning" which can be obtained at http://www.ocaml-book.com/.
The directories for Chapters 2 to 15 contain two files each, one with the examples from the text of the chapter, and one with the answers to the exercises. Where answers depend on functions written earlier, they are included in the file too.
Chapter 16 has its own README file.
In case of errata, please contact the author: john@coherentgraphics.co.uk