Sounds like a good aim. First you probably want to make a "mind map" of what you want to create. Then another map of what the Poser/DAZ community is currently missing in terms of content, or if there are areas where the content is old / badly designed / or simple lacking. The overlap between those two maps is where you would probably find it best and most profitable to work.

Given the advances in AI in another 3-4 years, we will likely then have a workflow from Poser / DAZ to a real-time 'AI renderer' viewport, in which a real-time AI 'works up' its output from a set of basic renders of a scene (depth-map, cartoon outine, pose estimation). In which case Poser / DAZ's strengths will then be in fantasy / sci-fi 'things which don't exist' (no photography of them, to train an AI on), visualised precisely by Poser / DAZ in a way the AI can replicate in full.  Along with precise  character poses + facial expressions.

As for the very basics of character rigging for Poser, I can recommend Darkseal's old 'Z Poser Figure Creation with Darkseal' video set. Old, but still valid and very detailed and complete. On the DAZ Store and likely to go to $5 on the Black Friday sale.

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