This handbook is one of the outputs of the SIM project, funded by the European Erasmus+ Programme (grant ID 2019-1-PT01-KA204-060716), which tackles the need to improve the social inclusion of disadvantaged groups, specifically those with disabilities. The handbook can be used as guided course curriculum or as a self-study book. The handbook will contribute to social sector to integrate a methodology very useful to tackle problems from a practical perspective. THE HANDBOOK IS DESIGNED FOR: • Social educators in charge of improving the competences of disadvantaged groups (midstream level) and their supervisors (strategic level). In other words, people working in social inclusion about social inclusion programmes as well as front line professionals. • University Professors who integrate it into their curricula of marketing, health, and social marketing studies. THE HANDBOOK IS AIMED TO BENEFIT: • Midstream level professionals: social educators such as social workers, psychologists, occupational therapists and employment mediators which directly work improving the competences of people with disabilities. The relationships developed in the disability sector between front-line professionals and customers are unique, genuine and long-lasting; and • Upstream level professionals: decision takers, managers of organizations, training program developers who supervise the tasks of educators, providing the training needed organizational resources. THE HANDBOOK WILL IMPROVE THE COMPETENCES OF SOCIAL EDUCATORS AND COORDINATORS TO: a) social marketing techniques and strategies; b) the English language; c) dealing with social inclusion problems from a different perspective; d) critical thinking; e) searching for and making use of relevant, trustworthy information