If you need help with developing your prayer style, check these out.
Lectio Divina

The Examen

Sacred Space

If you want to purchase a monthly booklet to help you with your prayer, try
Magnificat

Give Us This Day

If you need a course on prayer or on Catholic beliefs, check out the University of Dayton,
Virtual Learning Community for Faith Formation

For reliable print materials on Catholic devotions, saints and teachings, go to St. Anthony Messenger Press at

http://www.americancatholic.org/samo/default.aspx

Solid Catholic resources are also available from Our Sunday Visitor:

http://www.osv.com/