A great introduction to prayer for young people is Mark Link's book
Praying the Way Jesus Prayed. Loyola Press recently published a new edition of this classic book on prayer. Mark Link's Web site
http://www.staygreat.com is also a great resource for young people trying the develop a habit of daily prayer. It offers Scripture, a meditation, and a story each day.
If you aren't familiar with Loyola Press's daily
3-Minute Retreat or the
Creighton Online Ministries Web site, you might want to visit both sites. They offer daily prayer experiences and other resources.