Since it is a novel I have written, it has a simple enough structure to translate it directly into ConTeXt.
There are parts, chapters and scenes, just three levels of structuring... table of contents and very little more.
A generic converter will be a bigger endeavor to undertake, I'm not even trying to do it right now... it is enough for me to convert asciidoc basic elements into ConTeXt tags and let the presentation settings defined there.
As for docs about ConTeXt... The manual and ConTeXt: an excursion have been my main source of information, along with some articles about how to change/set fonts and how to define the page (paper size, margins, etc.)
I find ConTeXt approach much more configurable than LaTeX, but lack of docs is indeed a culprit...