This document provides guidance for moderating successful eTwinning groups. It discusses that teachers best acquire new knowledge through a community approach that encourages learning from peers and mentors by viewing model practices, trying new approaches, and reflecting on experiences. Successful moderation involves setting goals and expectations, facilitating dialogue, encouraging participation, and leading by example to develop new knowledge. Moderators should plan interactions carefully, keep the environment friendly and safe, and give members reasons to return to encourage ongoing interaction and participation.