Why read it? Because:
“God is opening before the Church the horizons of a humanity more fully prepared for the sowing of the Gospel. I sense that the moment has come to commit all of the Church’s energies to a new evangelization and to the mission ad gentes. No believer in Christ, no institution of the Church can avoid this supreme duty: to proclaim Christ to all peoples.” –Redemptoris Missio
Now dig in.