Data Management has been converted to Bookdown format for release under a Creative Commons license.
All the code is on GitHub and will be openly available.
There is still some tidying up to do, but the book is now available for free use.
I will be teaching data management next semester and will do some revising as well.
We are working on a pdf version for students who wish to pay for a hard copy.
Please report any errors.
Cheers ~ Rick