Thank you for the advice everyone. Things have been crazy around here, so I haven't got to do much in the way of trying to fix this bad boy. I plan on testing all the areas you folks are mentioning (glow plugs, battery, etc.)

I tried starting her in neutral for kicks, but no luck.

I know how to test the battery (trying the heat, radio, lights, etc.), but what else can I do to test the other areas?

Thank you all so much. It's a little nerve-wrecking being a first time owner sometimes (especially when you don't know anything about cars).