This document provides an overview of Yale University Library's implementation of the Ares course reserves management system. It describes the library's previous unsustainable course reserves workflows and the evaluation process that led them to select Ares. The implementation was a collaborative effort involving various teams who planned the integration with other systems, conducted data conversion, and created training and marketing materials. There were challenges along the way including a lengthy data conversion process and ensuring support for both print and electronic reserves. Lessons learned included assessing policies and procedures, having backup plans for issues, and gaining user buy-in through a phased rollout. Usage statistics improved after implementing Ares with significant increases in the number of print and electronic reserve items.