{Development of an e-textbook using \LaTeX\ and \acro{PS}tricks} {David Tulett} {For a course on decision modeling (linear, integer, and goal programming, networks, and decision trees) I created an e-textbook \PDF\ using \LaTeX\ and \acro{PS}tricks. I will discuss why I chose these programs, how I used them, and why I decided to make the final product ``open access''. The entire \PDF\ can be downloaded from \url{http://stor.mun.ca/handle/123456789/37463}. The author is grateful for funding from a Teaching Fellowship to attend the 2016 \TUG\ conference.}