Recently came across and have started reading "Think Stats: Probability and Statistics for Programmers
" by Allen B. Downey.
There are some other
"Think X" books that look interesting too, where X might be "Python", "Bayes", "Complexity" or something else.
...books are available under free license that allow readers to copy and distribute the text; they are also free to modify it, which allows them to adapt the book to different needs, and to help develop new material.
These books are available in a variety of electronic formats; some are also for sale in hard copy.
Found the Textbook Manifesto by the same author:
Students should read and understand textbooks.
More details at: http://greenteapress.com/manifesto.html
Sounded pretty reasonable.