yeah, get it started and let it charge the battery back up. They don't like a low battery for sure. Or, put it on a charger over night. Chances are, if you didn't have the rough running problems before the battery died, its prob. just because the battery is so low.
And yeah, I second that. The reason to hook up + first then - to ground is to avoid getting a spark on top of the battery that could ignite hydrogen gasses.