I put everything that came with the TT in a 3-ring binder. I've since added hard copies of additional manuals that I've downloaded from the internet that didn't come with the TT. For example, I have copies of Dometic fridge troubleshooting guides, Schwintek slide out troubleshooting guides, Dometic fridge parts list,etc.
There are times when having something in hard copy that you can see "all at once" beats the heck out of looking at one page, or part of a page, on some tablet or laptop. I can also write notes on the hard copies.
1988 Coleman Sequoia - popup (1987-2009) - outlasted 3 Dodge Grand Caravans!
2012 Roo19 - hybid (2012-2015)
2016 Mini Lite 2503S - tt (2015 - ???)
2011 Traverse LT, 3.6L, FWD
2009 Silverado 1500 Ext Cab, 5.3L, 4x4, 3.73
2016 Silverado 2500HD Dbl Cab, 6.0L 4x4, 4.10