Try using 6th's. Youll get a nice rock and roll sound, like Chuck berry or Status quo. then you can play more than half of Chucks or Status quos back catalogue
In A, alternate with the A then A6, A6 is the 'A' chord with a Gb. The fingering for A6 would be the 4 fourth fret of the fourth string (instead of the second fret).
Similarly D6 would be the fourth fret of the third string(instead of the second fret). E6 would be the fourth fret of the second string(again instead of the second fret) .
for variety you can also play sevenths. for A7 play the 'A' Chrod with the third string open., for D7 play the 'D' chord with the first fret of the second string, and for E, play the 'E' chrod with the fourth string open.
so you get a sequence for eg, such as
A A6 A7 A6, etc etc
its tricky at first but a good little exercise to get used to changing chords, and having chord variations, whislt also be able to play hundreds of songs that just use this seqeunce.
An example of the A A6 A7 A6 type is the opening chords of the status quo song 'Caroline'.
the chorus of this song is typical '12 bar blues'.
A A6 A7 A6 | A A6 A7 A6 | A A6 A7 A6 | A A6 A7 A6 | D D6 D7 D6 | D D6 D7 D6 | A A6 A7 A6 | A A6 A7 A6 | E E6 E7 E6 | D D6 D7 D6 | A A6 A7 A6 | E E6 E7 E6
(The '6th' means its the 6 note of major scale of the chord. The 7th , slightly confusingly at first means the Flattened 7th note(ie the seventh note lowered one semitone or one fret)
).
The above is a basic fingering method, There are alternate chord fingering methods as well, which sound better, but take more practice, but ill stop now !
there is a nice site that has lots of guitar tabs , and lessons as well as other guitar resources at
http://guitar.about.com/
