I, too, am a part of our Prayer Shawl Ministry at our church. We meet the 2nd Saturday of the month. We have gone to nursing homes to pass them out and offered them for a "love offering" to our worshipers, from which we donate the proceeds for a new church project.
The books I use are: Prayer Shawl Ministry Vol 1& 2, Knitted Prayer Shawls by Lisa Carnaban, Knit along with Debbie Macomber Friendship Shawls, Quick-to-Stitch Prayer Shawls (Crochet from Annies Attic, plus many more from the lionsbrand site.
There are just so many books to choose from. Have fun and enjoy.