For Google Analytics you do this:
1. Integrate it with Google analytics by checking [x] Enable Google Analytics tracking? in AFLinker admin panel/Global Settings.
From there you may track every bit a and piece of statistics that GA allows you.
AFLinker allows you to track not only click on redirects - GA stats page will show you exact page and exact link number on this page that was clicked.
So you may even track where people are clicking more - at the beginning, in the middle or at the bottom of the page - and adjust your marketing and web creation efforts accordingly.
Note: only outgoing links created on page by AFLinker will be tracked. Existing links are untouched.
3. Yes, you may use AFLinker as simple redirector or URL shortener as well. For that - you just fill "Source URL" and "Destination URL" and ignore anything else. As simple as that.
Hope this helps.