Watch the D7, G7 & A7 Chords online guitar lesson by TrueFire from Play Blues Guitar 1: Quick-Start for Beginners

More 7th chords here. The G7 is one that can be a big stretch, but once you get used to it you will be ready for other chords that you will surely run into that will be similar. Pay attention to the feel and tempo of this song, don't get ahead of the beat, and when you are ready make sure you can play it all the way through with the band.