Thanks, arjayes. This is how mine is set up:
That's a three inch, three "D" ring binder. The "D" ring binders work way better for a really thick manual; for one thing, they make it a lot easier to lay the binder and the pages flat on a table. That's the original cover from the SM. I keep the front and rear cover and the spine, and slide them into the binder sleeves.
The first section is a lot of stuff I've gleaned from on line (lots from this forum). Things like the tire removal tutorial from here, throttle body synch pigtail, stuff like that. The quick reference guide lists all the normal maintenance stuff like oil weights, tire sizes, compatible air filters, etc. I keep a copy of that on my phone.
I have the manual tabbed so it's easy to find the stuff I do most often. It can be a drag trying to find stuff in the SM, so this can speed it up. Plus, if you find something useful on line that supplements the SM, it's easy to insert it in the relevant part of the manual.
If I want to photocopy something and take it with me, this makes it way easier. It was also helpful in the past when I scanned a couple pages from the manual to email to someone who was on the road and needed the info for a repair.