If you're looking for good spiritual reading, I have found Fr. Jacques Philippe's books to be very helpful and practical for growing spiritually. It can be also be helpful to incorporate as themes or discussion topics with youth. They're quite short and to-the-point (www.frjacquesphilippe.com/books) .
Time for God: A Guide to Mental Prayer
The Way of Trust and Love: A Retreat Guided by St. Therese of Liseaux
Interior Freedom: Experiencing the Freedom of the Children of God