Ultra-newbie question

I have used Squeak, and I have used Seaside, but it has been a while. I have brought up the Pier environment on a headless server, and it looks as if I probably have the ability to configure it, add to it, etc. But there does not appear to be any documentation for Pier that is aimed at those who have forgotten what they may ever have learned about Seaside. I'm going back over the Seaside tutorial, but I wonder if someone can tell me how to log in to the default Pier server, the one that comes up when you make minimal changes out of the box (not even running under Apache). I had a "Log in" link on the page at one point, made the attempt with no errors reported, and was unable to edit anything. I think I'm missing a major concept somehow. Can anyone suggest what major item I've probably forgotten about Seaside? Thanks. GC