Three philanthropy groups (Exponent Philanthropy, Mission Investors Exchange and Arabella Advisors) have released a free guide to help foundations with small staffs navigate impact investing — making investments designed to generate measurable social or environmental benefits along with financial returns. Essentials of Impact Investing: A Guide for Small-Staffed Foundations is intended to boost awareness and the use of impact investing tools (for example, tools to measure and monitor investment performance, supply technical guidance to foundations and grant makers, and expand the impact investing community). You can download the 162-page guide at