I hope you're all sitting comfortably! Some of these are mentioned elsewhere, but will collate them all here for your amusement/ bemusement (delete as applicable:mrgreen:).
Hardbacks. Jacket carefully removed and put in a special dustbag I have . Book carefully read, without creasing the gaps between the covers and the spine. Jacket replaced after use. I always lift the jacket slightly so the bottom doesn't get bent on the shelf before I put it back.
Paperbacks. I read these at an angle. I don't open the book more than about 45 degrees because... I can't bear creases in the spine! Unless it's one of my favourites anyway, because then I have a seperate reading copy, of which I will permit some bending of the spine
This is quite embarrassing, I shouldn't have started this post!
Ok, there's more of course. I don't eat while I read. Not chocolate, because of smudgey chocolate marks on pages, and not meals, because it's quite difficult to manoevre a knife, a fork, and a book, and the book might get damaged. And I refuse to read in the bath. Can you imagine the state of the book if it actually fell right in the water?
I will have a cup of tea while I read, very carefully set back from the edge of whatever piece of furniture it rests on, just in case it falls off.
And I either read here in my chair (these days with one eye on the forum), or propped up in bed in my pyjamas with a hot water bottle and a cuppa
I think my biggest problem is that a lot of my books are firsts, signed, or limited, or a combination of these.