Nice, looks like you put quite a bit of work into that
I haven't completely finished reading it, but so far I have only a few little comments:
Under "you have struck gypsum!"
change: There is also some useful
lignite nearby, a
fuel for your forge
to: There is also some useful lignite nearby, which is an ore of coke, a fuel for your smelter and forge
Under activity zones: for a pond, you don't need the 3x3 zone. A 1x1 zone will suffice. For garbage dumping however, the zone must cover both the open space and a walkable spot.
Also, perhaps be a bit more explicit in warning a new player that only 1/7 water evaporates, so they should keep watch of the filling process.
Under What's in a name: add sarcophagus/coffin
For lesson 8:
Having a woodcutter double as an axedwarf will be a difficult example for a new player, the way their uniform works now. If you want to outfit the axedwarf, you will need to turn off his woodcutting labor, or it will override all equipment setting, and cause him to drop the axe when he is activated with a (s)quad order.
I'll happily read on, and see if I can help you out some more with polishing this nice wiki tutorial you made.
EDIT: done
It looks good for the rest. I believe you have written the guide for a 'bugless' version of DF. Some things you teach the new player won't exactly work as they should (think soap, plaster powder, the economy), but I think that's okay. Those bugs will be squashed sooner or later anyways.