There is an invaluable resource, particularly for guitarists, within the Worship Together website. In case you haven’t discovered it yet, go there now! http://www.worshiptogether.com/
Each song comes with a SONG VIDEO/NEW SONG CAFE where the song writer is interviewed, they share their song, and explain some of the unusual things they do to make the song work. Chord structures, rhythm and dynamics are all explored. It’s also helpful to hear the history of how the song came together, and the main things the writer intends the song to say. I always enjoy getting to know a little about the person behind the song as well. These clips are a great research for helping with tricky chord structures, and just getting the right feel to a song. I hope you find it helpful!