Your portfolio represents you, your skills, your work, your achievements. You will use it through out your academic career at the Academy of University to share your work with others.
Portfolios can be as simple as a single collection or you can have multiple collections of work. Using collections allows you to group your work around related themes and create collections for specific purposes. You can publish the entire portfolio, with all your collections, or make individual collections available selectively. It's up to you.