Being new to ZBrush, I think it would help to have a high level view of ZBrush functionality (due to the very unusual everything in the application).
For example:
Hair, Fur, Grass -> Fibermesh
Ivy, Trees -> Zsphere
Character modeling (silhouette) -> Zsphere
Sculpt using exiting geometry -> Projection Master
Quick and dirty UVs -> UV master
High poly scultping -> Dynamesh, Geometry HD
…
Where does nanomesh fit?
What is Arraymesh for?
…
there is a lot that needs to fit in an overall picture
Seriously Zbrush looks like it has a lot of amazing stuff. Any overview out there?