Sewing Machine

I am in the market for a sewing machine, but have no idea what I am looking for. I do not know how to sew and will be teaching myself.
My budget is roughly $100-$120. Can I get a decent sewing machine for that price?
What additional supplies will I need? I saw Martha Stewart place a magnet near her sewing needle to keep her line straight. Should I get on of those too?
I need a machine for sewing things such as napkins, aprons, curtains, table clothes and placemats.
Any feedbak would be helpful?
Here’s a quick story about Elias Howe and the Invention of the Sewing Machine. We read about him this week for science.