I have that Fakebook. I used it a lot when I was playing for a choir. You could get the chords right away. As far as reading from a fake book while actually playing for a choir is concerned, you have to learn to play from a fake book to be effective. There is more to it than it seems.
If you order that particular book, make sure that the songs it offers are to your liking. They are mostly traditional.
There are tutorial books on reading from a fake book, but the ones that I have seen are quite a study. Almost like learning to read music. Of course you could always just play the chords with your left and the tune notes with your right. That does not produce a full sound. I always simply got the chords and added notes as I saw fit.
