First you should give to your project a short and suggestive name.
Hint: Multi Project version will always show
your current project's name at the Current project: combo-box in the toolbar.
At any time you will be able to create and add a new project to your current pool of projects
by simply pressing the New button placed at the right side of the drop-down box.
All projects in the same pool will share resources, calendars, etc.
Make a concise description of the project scope. The scope statement will be an input data for the work breakdown structure you'll define later.