Would be pretty hard to find that thread...but you might browse thru the meat birds section to look for tips:
https://www.backyardchickens.com/forums/meat-birds-etc.21/
I found this blog very helpful as I prepared to slaughter my first bird:
http://ramblingredneckmom.blogspot.com/2011/04/how-to-process-chickens-at-home.html
Was your neighbor unable to help?
OMG, aart. I just now saw the link to the blog. That's it! It's what I was hunting for and could not find.