F
To play the F chord, use the first, second and third fingers of your left hand as shown in the diagram. Strum only five strings. The first finger bars across the first two strings. This is quite difficult at first. The F chord is easier to play if you position your third and second before positioning the first finger.
Remember that you can use any rhythm pattern you like on any chord progression as long as they have the same time signature e.g., * time.
C7
To play the C7 chord, use the four fingers of your left hand as shown in the diagram, and strum all six strings. The C7 chord is a C chord with an added Bb note played by the fourth finger.
Use your second finger as a pivot when changing between the F and Dm chords. Use your first and second fingers as pivots when changing between Am and C7.
B7
To play the B7 chord, use all four fingers of your left hand as shown in the diagram. Strum only five strings.
Some guitarists deaden the 6th string by lightly touching it with the left hand thumb which reaches over the top of the neck. The 6th string can then be strummed but it won’t sound as it is deadened. This technique can apply to any chord where the 6th string note is not a part of that chord shape.
The following progression contains both B7 and Bm.