Once you have logged into the emc NI publisher platform your home page will display categories down the right habd side panel of the home page.
'Portfolio' takes you to all of your submitted content where you can filter how you view the content or you can search for something specifically.
The 'portfolio' page is a handy tool for keeping an eye on the status of your documents; you can also click on the 'details' button next to each submission to see the 'content details' such as who submitted it, when it was submitted, etc.