A few years ago, a fellow forumite (Danny Danzi) posted a very well thought-out and well-written procedural guide for mixing/mastering.
Back then, I copy/pasted the text from his post into a Google Doc, which I've referred to on multiple occasions over the years. A couple months ago that gdoc was corrupted, and according to Google's tech support it is "unrecoverable".
I've searched in vain for this old thread, but can't find it. Any chance any of you might have bookmarked this thread, or copied his text?
I found another link with some specific instructions, that someone else had copy/pasted from yet a different thread. It is also full of good stuff - but it isn't the essay I was looking for. The one I had copied was extremely thorough, starting with track preparation and a clean slate on the console.