I am trying to make an interior for a notebook and I can't figure out how to duplicate one page across one hundred pages. I'm trying to find the easiest way to accomplish this.
This can be solved by using the Master page template feature in InDesign. First open a new InDesign document and set up your document to have the number of pages you'd like the document to have (this case it sounds like you'd like 100). In the Pages Panel, simply edit the A-Master section that appears at the top of the panel:
Select the A-Master page and place the notebook background you wish to use in the A-Master page spread,
right-click the A-Master spread and select Apply Master to Pages:
In the Apply Master prompt, be sure to select All Pages in the To Pages drop down menu:
Select OK and the Master template will be applied across all pages in the document.