Answer:
First of all login.
There are login links on the main page. If you cannot remember your password. Use the forgot password link.
When you are logged in you should see a list of your albums.
if not go to "My Home" then "My Albums"
Click on an album and this will take you to your swaps page for that album. You should see an "Edit" button.
Click on that, make the changes and then if you are happy click on the blue underlined Save.
Your changes will be saved.
If you have an email address set and you actually have some swaps your page should now be at the top of the "People with swaps (100 most recently modified)" view on the front page.
See the Manage Collections page of the How to Swap section.