How do I make books with this layout/format?

The cover page is almost as flat as the paper inside but it’s thicker and it looks like there’s some kind of glue between the pages and the spine. I am highly considering using this same format but obviously more bigger. Anyone have any idea on how to make a book like this?
How do I make books with this layout/format?
How do I make books with this layout/format?
How do I make books with this layout/format?
How do I make books with this layout/format?
Also, I made progress on that T-Rex
How do I make books with this layout/format?
How do I make books with this layout/format?
How do I make books with this layout/format?
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