I originally had a function to do something similar with custom fields, but using custom fields was kind of a crude method for this. By using the built-in WordPress taxonomy system, we get a lot of automated stuff like series archives and the ability to use built-in WordPress functions to display content.
It creates a new taxonomy called "series" for use on your site. It gives you template tags, shortcodes, and widgets to allow you to more easily tie posts together in a series.
You should do a little reading. The readme.html file included with the plugin has links to tons of resources. Everything you need to know is there.




