although I would agree with George's recommendations, note that this version of the song has some different words and a different air than the most familiar version of the "Eriskay Love Lilt"

the familiar form of the song may be (I'm not sure) on "Karaoke Ceilidh" tape and booklet published by CLI (Comunn an Luchd-Ionnsachaidh - Gaelic learners' association). I don't care for the keyboard accompaniament on the tape, but it's a useful tool for learning songs as the lyrics are both spoken and sung for you.
direct link for purchase

here's one of several sites with advice on sources for learning Scottish Gaelic