I gathered my supplies:
a sponge brush, and
a new brayer.
My old one is somewhere downstairs and the rubber is most likely brittle so I used a coupon at Michael's and now own a new one.
I sorted through my cookbooks, gave away only 6, and still have a heavy box that is going OUT the door. Soon, very soon! I found one that I liked (but not enough to keep) and tore out the pages I used.
I spread glue on the bookcase top and back and put the pages down on the glue. Rolled over them with the brayer and wiped excess glue away with a damp cloth.
I did wrap a bit around the one side where the next step is to glue on some beadboard wallpaper and paint it.
As you work on projects, small or large, may the imperfections become unimportant so you can enjoy the satisfaction of having done your best. Progress is bliss!!