If you have a PDF document that you have compiled from a range of sources (e.g. an Excel spreadsheet and a Word document), chances are that one or more of the pages will need to be rotated for easy on-screen viewing. Luckily, rotating pages in Acrobat is child's play. This tip explains how.
From within Adobe Acrobat:
Select Document > Rotate Pages.
Choose your direction from the drop down box (clockwise 90 degrees, counter-clockwise 90 degrees, 180 degrees).
Choose your page range (all, selection, pages) and set any rotation options if appropriate (page of any orientation, portrait page, landscape pages).
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.