Enter your Del.icio.us username and password and hit enter or click Go. If necessary set your Internet proxy and credentials.
At this time the application will go out and grab all of your tags and generate the context menu of the tray icon.
You will then have a new icon in your tray.
Right-clicking on that icon will display the menu, it will only show first letters that exist. Clicking a tag will take you to that tag on your del.icio.us account, http://del.icio.us/username/tag in your default browser.
Update Now will refresh your list of tags, the application updates automatically every 10 minutes.
My Del.icio.us will take you to your account homepage, http://del.icio.us/username
Show/Hide will show the main window where you can change your credentials if necessary.
Clicking All Bookmarks will display all of your links in a treeview, clicking a node that begins with "http" will open a browser going to that link.
The ALL node has all of your links, each node below that is a tag that you have with each post assigned that tag below it.