central air conditioning is invented in 1902. You can read the history of it and find out more information about air conditioning at en.wikipedia.org/wiki/Air_conditioning
Information on printer maintenance can be found inside the manufacturers manual. Further information may be found via a relevant search on the internet.
Information concerning the maintenance of specific software can be found within or upon the software itself. Often, such information comes in the form of wordpad doc.
You can find out about HVAC systems through local air-conditioning/heating companies, or you can also find information online at sites such as www.lennox.com to find all of the info.
If you are trying to find more information on available heating and air conditioning schools, visit http://www.directoryofschools.com/Heating-Ventilation-Air-Conditioning-and-Refrigeration-School.htm for a list of qualified schools. Many of these options are affordable.
http://www.propertymaintenance.com/ I was stuck in the same situation as you. Luckily I found this website and love it. It has an exceptional guide to property maintenance.
SMACNA is known by the name Sheet Metal and Air Conditioning Contractors National Association. On the company website one can find a variety of information such as becoming a member, events, as well as contact information.
One might suggest that the first place to find out more information about how to cool homes would be your local energy company. Depending on your location they could offer one information on weatherization, fans and even air conditioning that would help to cool your home.
One can find information on electric transformers by calling their electric company and talking to the maintenance guys there or they can search for a website to find all the information they need about said electric transformer.
Information on Vespa engines can be found from Vespa's website or at Scooter Help, American Scooter Center, Vespa Maintenance, Modern Vespa, and Motorcycle USA.
You can find more information on cloud computing by going through Microsoft website and also there are numerous articles available online. The main advantage being its significantly low cost maintenance of data processing
To find out more information about CHDK, it is advised to surf the web or do some research to find out what it is or where to find out more information about it.