I asked additional stuff at my original post, but I guess it was too far down the page for people to see.
Finishing my basement part II.
I learned that nothing should be pressed directly against the block. Using 2x4s and 1" extruded foam insulation will provide about 2" of air gap between the block & insulation. Is this air gap preferred? I don't understand the idea of venting at top and bottem? I want to keep the inside insulated envelop (the room) sealed from the air gap between the concrete block & insulation. However, moisture will then find its way to the cold inside wall of block, because the room won't be 100% airtight. I guess I still don't understand?
My plan was originally to have the foam insulation and drywall pressed directly against the block wall because they look fairly plum. I thought that no air gap would prevent molds & mildew from growing. One of my primary concerns is preventing mold & mildew. Please say more about preventing moisture from condensing on the block wall and growing mold & mildew!
Thanks for all the input, & I look for more. What a great site!