I saw the wiki article that Phonos referred to and it was someone's idea of a joke. Basically said that they should go straight to AG.
I deleted the original article and wrote a few lines that others have now expanded on.
Thanks to the people that have picked up on it and continued the good work.
Don't agree with the point about hydrating yeast. At the beginner's stage, the KIS factor is more important. Hydrating means more risks of infection, and that hydrating temp is very important. Not many kit brewers have a decent stick thermometer. Also, Mark wrote in a thread recently, that the people who have most problems with their yeast are the rehydraters. Much more important are sanitation and temperature control of the brew.
Most first brews are made using whatever ingredients come with the starter kit, be it good or bad.