I play in a Church band and found that tab for praise music is hard to come by. I do like Kaufman's "Flat Picking the Gospels" and it has both standard notation and tab. There are two versions to each song, beginning and advanced (and I mean ADVANCED in that these versions are quite challenging and I am an intermediate player). Be sure to get the CD to help you learn the advanced songs.
However, my suggestion is to learn to read standard notation. All the music for our group is in standard. Buy yourself a beginning violin book to start. It only took me about 3 months to get comfortable playing standard notiation. In the meantime, learn your two-finger chords and chord along until you can either read the music or learn it by ear.
Las Vegas, NV
"Every day brings a chance for you to draw in a breath, kick off your shoes and play your mandolin."