We are in the process of putting together a new conversion page for the MobileRead Wiki located at
https://wiki.mobileread.com/wiki/E-book_conversion
It is still a work in progress and I hope to finish it by Monday night (Eastern US time.) The goal is to incorporate the latest references from within MobileRead and external references for the code where needed.
As always, comments, suggestions, and corrections are welcome (requested, wanted.)