Start with high-confidence christianity for teens books, then narrow by subgenre or adjacent topics.
Is God Real? for Teens
Lee Strobel
Don't Buy the Lie
Mark Matlock
Enjoy the Silence
Maggie Robbins, Duffy Robbins
Mending the Soul Student Edition
Steven R. Tracy, Celestia G Tracy
The Circle Maker Student Edition
Mark Batterson, Parker Batterson
The Case for Faith Student Edition
Lee Strobel, Jane Vogel
I Would Die for You
Brent Higgins, Deanna Higgins
Jesus Calling, Teen Cover, With Scripture References
Sarah Young
Live on Purpose
Sadie Robertson Huff, Beth Clark
Can You Keep Your Faith in College?
Abbie Smith
How to Stay Christian in College
J. Budziszewski
The 5-minute Bible Study for Teen Girls
Carey Scott
