#1
I have recently split with my band and going to preform at a few acoustic nights to get a feel for being on my own with my guitar, but im not so sure about my singing, i have a pretty low voice and was wondering if there are any easy songs to sing and play together that you could recommend from your experience
#2
I suggest to sing the songs you know best (ones where you can play the rhythm on your guitar without even thinking about it, cos if you've never done it before, you'll have a lot to think about remembering the chords, the lyrics, while trying to stay in tune and keep breathing).

As for your low voice, if the song is too high for you, transpose it with a capo or play with the tuning on your guitar until it fits in your range (if you cant get it to fit no matter what, pick another song)