I remember Where the Wild Things Are and other art books the most. Reading The Hobbit when I did (9 or 10?) was pretty important to me. A good mix of adventure. I learned to use a dictionary really well because I had never seen many of the words in the book. Growing up in rural eastern Kentucky coal fields I didn't get a lot of help from the adults around me in that regard. I also still remember the feeling of tension and fear in the scenes with the ogres and Gollum having some comedic elements here and there to make being a little afraid fun.
Then I probably got into fantasy novels well above my age shortly after. lol Piers Anthony made several of his books anatomy lessons.
