Max, Lucado has written a short Bible Study on Prayer. His Discovering the Power of Prayer: 4 Interactive Bible studies for Individual or Small Groups includes a CD taped to the inside of the book. Follow along with notes while the CD is playing and then the second part has you going deeper into the study. The first lesson is why prayer is import, the second lesson shows that God listens and is willing to help, the third is consistent prayer, and the fourth trusting God. This book is found on the shelves under the number 242/LUC.