The document discusses theories related to communities of practice (CoP) and everyday life. It covers the work of John Dewey, Jean Piaget, Lev Vygotsky, and Michel de Certeau, focusing on their concepts of social learning and everyday tactics. The document also examines Lave and Wenger's work in coining the term CoP and describing situated learning through participation. It provides examples of how CoP theory has been applied in library and information science education and sport coach learning.