First Aid Wheels, a wheel refurbishment center in London, wrote a Guide to Alloy Wheels awhile back which they have now converted a short video.
It neatly and succinctly summarizes the main points worth knowing about alloy wheels, such as how to select the correct wheel size, how to fit alloys, and how to avoid damaging your alloys.
Credit: http://www.fawheels.co.uk/
