I would also suggest reading this page too as you begin, to get other options for setting up the pages: Transposed Bleed in the Gutter 25' margin on interior pages, you are correct. Start designing! Make sure to keep your margins in mind, and ensure no important content ends up being trimmed off in production.(For example, if you're creating an 8.5x11', set the width to 8.75' and the heigh to 11.25')
enter in the final page size of your project plus.
Unlike traditional offset production, our on-demand printing is optimized for a simple document that is the full size of the book with bleed, without crop marks. When creating your book in Adobe InDesign, it is very important to understand how to best format it for printing with us.