For your knowledge and future reference, I have compiled a series of internet links describing the operation of home systems and components as well as a number of reference books. I have tried to organize this page on a category basis, for instance; home heating systems, roofing systems, central air conditioning systems, hot water heaters, etc.
Home Heating Systems:
For great energy saving tips on home heating and hot water systems, check out the US Department of Energy site below
Another very good site providing tutorials on heating, air conditioning, heat pump systems, etc.
More Energy tips from EnergyStar
The best tutorials on water, steam and hot air heat
Hot Water Systems
Central Air Conditioning
Although I am not too wild about this guy, Bob Villa does an OK job of describing the attributes of vinyl siding
Total Home Inspections
of New England, LLC