This document provides instructions for joining a public community on an online collaboration tool. It outlines 7 steps: 1) navigate to the communities section, 2) select public communities, 3) filter by tags, 4) use recommendations, 5) search for communities, 6) select a community, and 7) request to join and wait for approval. The goal is to teach how to connect with others on the collaboration platform to share best practices, files, and participate in online forums.