If you need to "put things in perspective" with your PDF documents, a neat solution can be to use Acrobat's Pan and Zoom Window. The Pan & Zoom Window provides a small thumbnail view of your current page with basic navigability and zoom control. The main window is unaffected, however, so you are free to keep navigating and/or editing the PDF in Acrobat's main window while the Pan and Zoom Window provides a bird's-eye overview. All of this makes it a great way to preview page layouts.
Here's how to use Acrobat's Pan & Zoom Window:
Select > Tools > View > Pan & Zoom Window
The thumbnail will appear which will provide the page you are currently working. Move the red highlight box within the thumbnail
screen to navigate around your PDF document.
OK, so you want to stamp your document. Maybe you need to give reviewers some advice about the document's status or sensitivity. This tip from author Ted Padova demonstrates how to add stamps with the Stamp Tool along with related comments.