Effective Altruism Handbook by John Dalton

A practical guide to applying evidence and reason to doing the most good, outlining core principles of effective altruism—cause prioritization, cost-effectiveness, expected-value thinking, and moral impartiality—and offering decision tools for giving, career choice, advocacy, and community building; it surveys high-impact cause areas (global health and development, animal welfare, and long-term risks including advanced AI), explains how to evaluate interventions and charities, and gives actionable advice for maximizing individual and collective social impact.