Hi,
Just a couple of thoughts.
1. Learning to play guitar without being able to accompany songs is boring. Even if it's only a simple song, you can generally learn them pretty quickly and then footer with the strumming etc. It also helps get your ear into the chord changes.
2. If you are having problems with 6 string chords - then try playing 4 string chords on D,G,B & E strings ( Just miss the two bass strings out). That will get you playing songs - particularly when you need to play "F" chords. You will need to add the two lower strings in time, but it will get you started.
3. You can start with two chord songs like Jambalaya - see -
<a href="http://www.chordie.com/chord.pere/?url=http%3A%2F%2Fgetsome.org%2Fguitar%2Folga%2Fmain%2Fw%2Fwilliams_hank%2Fjambalaya.pro&songbook=source&transpose=0" target="_blank"> http://www.chordie.com/chord.pere/?url= … 2Fgetsome. org%2Fguitar%2Folga%2Fmain%2Fw%2Fwilliams_hank%2Fjambalaya.p ro&songbook=source&transpose=0</a>
Then move on to three chords. There are a number of songbooks with these on Chordie.
Try The Lion Sleeps tonight
<a href="http://www.chordie.com/chord.pere/?url=http%3A%2F%2Fgetsome.org%2Fguitar%2Folga%2Fmain%2Fr%2Frem%2Fthe_lion_sleeps_tonight.crd&songbook=source&transpose=0" target="_blank"> http://www.chordie.com/chord.pere/?url= … 2Fgetsome. org%2Fguitar%2Folga%2Fmain%2Fr%2Frem%2Fthe_lion_sleeps_tonig ht.crd&songbook=source&transpose=0</a>
Not as cool as Stiff Little Fingers, but they'll get you motoring.
4. And just keep going - or, as we say in Belfast, "Keep Her Lit".