Purchase a book and a journal for your teenager. Any old notebook or journal will do.
Work through the book with your teenager, having nightly conversations about the content.
Carve out time each week to spend with your teenager over ice cream, pizza, in the car, shooting basketball, or just sitting in your living room. Make it just you and your teenager, talking about the content, answering questions, giving your own experiences, and passing on wisdom. Make it a priority and as special as you can.
They are each about 8 weeks long, and could be a great signpost experience for you and your kids!