I have been teaching guitar for more than seven years. In that time, I have used We’re Singing, 7th ed. (by the Wilds® Christian Association, Inc.) extensively as a supplemental text in teaching believers how to play the guitar.
198 songs in SATB with lyrics and chords
Capo information for songs originally in keys that are difficult to play on the guitar
An extensive chart of standard chords, including diminished chords, and a chart of other chords
A comprehensive index of songs
This book is geared for use by both piano players and guitarists, and the author(s) have done an excellent job overall in supplying the chords for the songs.
The capo information and chords supplied for the many songs that are originally in harder keys for guitar work well toward making strumming or picking the chords for these songs generally straightforward.
The book provides a good number of simpler songs that are in good keys for guitar (with and without the use of a capo), which allows the beginning student to use it effectively to learn most of the important chords in the common keys (F, C, D, G, A, and E) that are used in guitar music.
This has been the most useful book that I have found for guitarists who want to play Christian songs.