the first thing I would do is place the green house on the south side of your house. There are two advanges to this one is the warm sun in the winter and this is also easer to heat and light. the second thing I would is start looking at your loacel thrift shop for used storm windows that can open because you need to be able to cool the green house in the spring also look for a use storm door.for the framing I would consult your laocal building materal store for books building a green house.