The book begins by emphasising the importance of rigorous research in the social sciences and humanities in understanding human behaviour and social systems, and in contributing to social progress. It then addresses the methodological challenges specific to these disciplines, such as the complexity of the phenomena studied.The guide aims to provide a comprehensive framework covering the theoretical foundations and practical application of research methods. It is aimed at researchers, students and professionals in the field. The first part presents the theoretical foundations: formulation of the problem, literature review, theoretical frameworks, hypotheses, methodological paradigms (qualitative, quantitative, mixed) and ethical considerations.The second deals with empirical implementation: research design, tools for collecting quantitative data (surveys, tests) and qualitative data (interviews, observations), sampling, measurements, data analysis.The third covers the communication of results: report writing, visualisation, discussion/interpretation and recommendations.In conclusion, the book stresses the need for methodological rigour combined with the researcher's reflective judgement.