I am not familiar with that particular model of camera. Does it have an auto-rewind? It sounds like maybe that first roll was done, but should have been rewound back into the canister so it could have been developed. I'd open the camera and make sure the film has loaded correctly - that's the easiest thing to screw up in a film camera, frankly. Make sure the holes are aligned with the sprockets, and that when you use the lever, the film moves. If you do this under dim light, or get a red lightbuld and make your closet into a temporary darkroom, you won't ruin too much of the roll.

If this doesn't work, and you don't have a manual, I'd take it to a camera store - the old fashioned kind, not a Best Buy or anything - and look for an older employee and plead ignorance.