Ok, I promised it a looong time ago...
I managed to do a wee bit and copy&paste into google (which half-failed): Google-Doc
this is just a start and by no means complete
If I managed to set the rights correctly, people should be able to make comments but not straigt-up edit the doc.
Feel free to comment and tell me what I should add or change or improve (except layout ;-) )
please keep in mind this guide is specifically meant for beginners, thus usually low-level games, no "build x can do y later" because of some feat with steep requirements ;-)