Nonprofits are increasingly asked to provide evidence that their programs help clients. Even without such pressure, they should operate and manage their resources in a way that is most effective for clients. Regularly collected feedback on service outcomes can help provide the needed evidence on impacts and create learning organizations that constantly improve their services. This guide is the first in a series designed to help nonprofits that wish to introduce outcome management or improve their use of the process. It documents the key steps in establishing and maintaining an outcome-oriented measurement process and in using the data collected.