The Worldwide Web User's Manual

  I was just making a small pot of coffee, just two cups. So I measured out two full cups of water, and guessed how much coffee to put in the basket. The coffee came out great, but could just have easily come out awful. :-)
  So if Wikipedia is the web's encyclopedia, where is the web's user's manual? It would be infinitely expandable, aspire to cover everything, and take a practical 1-2-3 approach to doing things we humans do on this planet in the times we live in.