Hey there, Brian.
If you click on your username anywhere on the site, you'll be taken to your profile page. There are four categories or tabs on each person's profile; they are:
1: People's activity on your synths
2: The latest comments on synths that you have commented on
3: Your synths
4: Your favorites
If you click on "Signed in as Hooses-HFL" you'll be taken to recent activity on your synths, but if you click on your username next to your synths or your posts here on the forum, you'll be taken to your synths.
As to instructions on how to use the synther... well... it's pretty much just set the photos into it, give it a title, and press 'Synth'. There's no controls at all for manually correcting photos that didn't place where you thought they would or anything like that, so it's really just about learning what sort of photos the synther *will* figure out and giving it what it wants.
I guess you found the video and guide: http://photosynth.net/howtosynth.aspx