What would it take to get the Epub version of my book on Kindle Fire either as a share library or available for purchase?
Publish it on KDP.
Ken Anderson - The Print & EPUB Professor
"I format and fix EPUBs - all tested & validated on real iPad and Nook readers"
Lulu doesn't support Kindle, so you'll need work with their self-pub platform at http://kdp.amazon.com
Start here: https://kdp.amazon.com/self-publishing/help and follow the process from there.