6" footing with a 4" base sounds like they are implying a concrete slab that's thickened at the edges, not as straightforward for a noob such as yourself (your words!) but I'm sure you'll manage it.
~quick google~ the pics will explain it.
http://www.oldhouseweb.com/how-to-advice/concrete-floor-slabs-on-ground.shtml
http://www.builderbill-diy-help.com/formwork-step.html
http://www.familyhandyman.com/DIY-P...te/form-and-pour-a-concrete-slab/Step-By-Step
~quick google~ the pics will explain it.
http://www.oldhouseweb.com/how-to-advice/concrete-floor-slabs-on-ground.shtml
http://www.builderbill-diy-help.com/formwork-step.html
http://www.familyhandyman.com/DIY-P...te/form-and-pour-a-concrete-slab/Step-By-Step