The church has been talking about evangelization for a LONG TIME, which means that it too has some great resources that we can benefit from. We've added a few here that we think you would really benefit from reading. Warning! Some of them are quite long, but I think young people enjoy a challenge.
1. Pope Paul VI's Apostolic Exhortation, Evangelii Nuntiandi (Evangelization in the Modern World)
2. John Paul II's Encyclical Letter, Redemptoris Missio (Mission of the Redeemer)
3. Pope Francis' Apostolic Exhortation, Evangelii Gaudium (The Joy of the Gospel)