This text addresses the understanding and alleviation of poverty, inequality, and inequity using a unique and broad mix of concepts, measurement methods, statistical tools, software, and practical exercises. Part I discusses basic fundamental issues of well-being and poverty measurement. Part II develops an integrated framework for measuring poverty, social welfare, inequality, vertical equity, horizontal equity, and redistribution. Part III presents and develops recent methods for testing the robustness of distributive rankings. Part IV discusses ways of using policy to alleviate poverty, improve welfare, increase equity, and assess the impact of growth. Part V applies the tools to real data.