Life Action Ministries has some excellent materials on the Christian walk, available as PDF downloads. Several of them have really ministered to my heart and that of my family. Some that I specifically recommend to you are: "Teach Me to Pray", "Put Off...Put On", and "The Complete Spiritual". Here is the link:
On an extra note, Life Action is the ministry that my mom travelled with as a singer in 1987-88. It has ministered to many individual hearts and churches. I highly recommend these resources to you!