For folks that already play an instrument and want to sing.
Sometimes I really wish I could sing! I know I don't the greatest voice but there's something really nice about playing a song and singing along to the chords. Or being able to sing the song you wrote. I'm not saying to have the most amazing voice but to be able to sing in decent pitch and convey the feeling of the song. I suppose that's easier said than done.
Here is a series of videos that will take you through one way of beginning to learn to sing.