Select a project from the list. The project names are taken from the folders in your project folder. The program ships with a simple example portfolio called 'Example Portfolio One' and a couple of projects including one called 'The Office Move 2009'.
Select one of the portfolios from the 'Portfolios' list. At the top of the list there is the default 'All Projects' portfolio, which is simply an umbrella for all the projects in the system.
After selecting a portfolio, the 'Projects' list will show all the projects in that portfolio. Select one to start working with that project.