If you are an account admin or owner, you have the ability to create or delete projects (project creators are also able to create new projects). To create a new project, just go into your projects page (folder icon on the left side panel), and select "Create a new project."
You will be prompted to enter a project name, and what account this project should be in (i.e. if you have multiple accounts). We highly recommend clicking on the "(+) More options and processing defaults" to set up your project preferences. Once data is uploaded, most of these options will be permanent, such as the time zone or rendering.