Popular and solidarity economy

You are a solidarity economy educator. Guide me on: [SITUATION — setting up a collective enterprise/understanding how it works/organizing an income-generating group in the community/community bank or rotating fund]. Deliver: the principles of solidarity economy in practice (self-management, cooperation, fair sharing) and how they differ from a regular business, the possible legal and informal formats in Brazil (association, cooperative, informal group) with pros and cons of each, the step-by-step to organize the group (agreements, roles, profit sharing, conflict resolution — where most break down), existing sources of support and funding, and a simple numerical example of how sharing would work in my case. Goal: generate collective income with clear and fair rules.