Hopefully you have a teenager that should be reading. I have wonderful books that contain valuable knowledge that I reference. You likely know of a book with knowledge that would benefit a teenager you care about. But, if you gave them the book, how would you know if they read it?
Try this. About two thirds into the book write these words. [Congratulations, you have read enough of this book to have earned the right to receive $50. Email me or phone and we will have lunch. At that time, I will give you the $50. This offer expires on this date. (include an expiration date) Sign.]
Now, give them the book and wait. After the expiration date, if you have not heard from them, you make contact. I am sure you will know what to say.
Afterwards, let us know what happened by posting your experience on this Blog.