This work presents a community outreach course to develop skills for participants to become multipliers of solutions for adapting public spaces in different contexts, using Tactical Urbanism as a Social Technology. Tactical Urbanism is an approach to activating neighborhoods using short-term, low-cost and scalable interventions that allow the immediate redesign of public space, targeting future transformations. Creating a network of local agents is essential to building agile and replicable responses to new demands and creating resilient communities. Thus, we propose the concept of “multiplication of knowledge”, considering: the community of learners; the need to master processes and reciprocity. The first idea resides in the formation of multidisciplinary groups in search of knowledge that enables the recovery of public spaces; the second is based on the dissemination of tools for citizens to become agents of change and the third refers to feedback: knowing how to reevaluate solutions. The course offers contemporary content that criticizes the car-centered paradigm of Brazilian cities and helps to propose changes in daily life with a focus on people and on strengthening communities. It is organized on three levels: the proposing team trains tutors (officers from the public sector, architects, NGOs, neighborhood associations), who interact with local agents (citizens), promoting capillarity so that Tactical Urbanism interventions take place. Divided into three modules — discover (case presentations and theoretical content); design (development of solutions); and prototyping (testing of proposals) — the course combines recorded classes that allow replication with face-to-face workshops and DIY interventions.