Some thoughts:

Saving poses - What each option in select poses does and when to use them. 

Mat room - explain the beginner nodes (easiest to use and most commonly used ones) how they work and show what a change to a value will do.

Lighting - explain and show how all the basic lights work and show how to produce some simple effects.

Lighting - what HDRI and IBLs are, how, when, and why to use them.

Tips - general basic tips for beginners that everyone should be using.  Then do intermediate and advanced tips.

Setting up external runtimes, when, and why I should use them.
How to set up my poser preferences and what each one does.
Rendering options - show how to set up render options for what you are doing, and include tips to speed up the renders or to make them look better.

Mat room - tell me if a node or an option is beginner, intermediate, advanced, or mostly useless.  Show me how it works and what the changes do. 

NVIATWAS - what this means.

Tips for realism
Tips for commonly used artistic effects (ie using a filter to produce a monocrome image).

And finally - how to make a bloody decent toon render with appropriate outlines.

WARK!

Thus Spoketh Winterclaw: a blog about a Winterclaw who speaks from time to time.

 

(using Poser Pro 2014 SR3, on 64 bit Win 7, poser units are inches.)