FamilyLife, the family ministry of Power to Change Ministries, provides faith-based resources to help parents guide their teens in making biblical choices about ther sexuality:

• Passport to Purity
  Go on a guided weekend retreat for a father and son or mother and daughter that will prepare your preteen to make wise, biblical choices about their sexuality.
  
  • Read “I Won’t Until I Do”
  • Passport to Purity book and resource kit

• Beyond Abstinence
  The goal of our instruction with our children is not just protecting their virginity, but helping our children protect their purity and innocence. And those two God-given gifts are lost long before intercourse when your child begins to experience the sexual response that God designed for marriage.

• Protecting Your Child’s Sexual Innocence
  Talking about sex may be the single most powerful way parents have of entering into the lives of their children. It also can be the most difficult.

• Sex: It’s Worth Waiting For
  Greg Speck, former caseworker with troubled teenagers, shows readers God’s standards for their physical and spiritual well-being. Speck understands their fears, hurts, and questions. He compassionately addresses issues that parents are afraid to discuss. It’s the kind of book you will want to give to your teen.
  

Secular web sites with abstinence info:

• Pregnancy Care Centre
  
• It’s Great to Wait
  
• Campaign For Our Children, Inc.
• FRIENDS FIRST