Engineering

ASEM "is a global professional society dedicated to the promotion and advancement of the engineering and technical management profession. Engineering Management, broadly defined, is the art and science of planning, organizing, allocating resources, and directing and controlling activities that have a technological or systems component." (self-description)

ATMAE works especially closely with colleges and universities to help develop the careers of engineering managers.

A textbook and other courseware by Charles Severance, introducing Python to new programmers with a focus on data science applications.

By Garrett Grolemund and Hadley Wickham, the latter of which hosts an electronic copy of this book under a Creative Commons license. Meant for programmers with an R background.

A now out-of-print book made freely available by the author. A very broad introduction; includes significant material on Bayesian methods.

O'Reilly Publishing, one of the major math and computer book publishers, has made some of its material relating to data science free to download.

A subject guide created at the SUNY-Geneseo Library, collecting free and open access datasets across the internet, with advice for finding more.