The document provides an introduction to Freifunk, a decentralized wireless community network operating in Germany and other parts of Europe. It discusses Freifunk's vision of free and open networks without registration or censorship, its goals of reducing the digital divide and promoting alternatives to traditional internet providers. It also describes Freifunk's history, current activities including over 400 communities and 45,000 nodes, technical aspects like hardware, firmware and protocols, and ways for new communities to get involved.