Guide on Fitting a VW Golf Alternator

I am looking for someone to write a series of how to guides for a part finding site.

To start with a want to focus on how to fit a VW Golf alternator but also if the procedure applies to other vehicles. I want the article to include why alternators fail, possible symptons and step by step guide on how to remove the old one and fit. It is also preferable to include images and I would be happy to pay more if it could be videod.