German and Italian ESL students work together to create and share educational material to be published on-line in an e-book entitled “Be my Book”. Using smartphones, tablets, digital cameras and online apps they will create dialogues in real contexts and will design their own lessons combining vocabulary, grammar, audio conversations, interactive games, quizzes, puzzles, videos, authentic material and cultural notes. They will work in international teams and they will learn from each other according to the principles of peer education.