Hey Everyone,
I just popped on youtube and I found a couple videos that may be worth checking out. In the last video the dude mentions a technique for when you want to sing while playing the guitar. I remember that being difficult to master so I hope this helps.
1) http://www.mahalo.com/How_to_Play_Guitar_for_Newbies (General Guitar Website)
2) http://www.youtube.com/watch?v=Lcmb4RplClQ (For detailed Chord Info)
3) http://www.youtube.com/watch?v=rMndYRvxLOY (For singing and playing tips)