Folks,
Why not adding user written articles to index.txt? I think that making all articles included in index.txt and adjusting order would be important; alphabetical order don't always work (especially for some languages).
Yes, the proper way to control the order of guides is to put its name into the file index.txt (in the Quickguides folder for your language). I wanted to make sure that a teacher can add her own Quickguide without needing to know anything about index.txt. Many thanks to Korakurider for establishing index.txt as a way to show names with the proper accents (in UTF-8) and to control the order of guides.
--Ted.