First, we'll go back to basics: selecting text in PDF documents. Why would you want to do this? Well, there are numerous reasons. For instance, you might want to quote the textual content of a document, or you might want to quickly make a document bookmark. Let me explain. Selected text can be used to both anchor (set the destination) and name a bookmark. Pretty cool, huh?
Open the document to be bookmarked in Acrobat 7.
Navigate to the text you would like to use as the bookmark name.
Choose the Select tool.
Click and drag to highlight the text.
Set the desired zoom level for the bookmark from the View menu.
Create the bookmark by holding Ctrl + B.
And you're done! Anyone subsequently viewing your PDF documents will now be able to navigate them quickly and easily.
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.