Although roles are covered in more detail in Chapter 5: Enrolling Students and Chapter 6: Creating the Student Blog, we will briefly cover how to create roles here.
To create a new role, click the Administer | User Management | Roles link, or navigate to admin/user/roles as shown in the following screenshot:
As seen by Item 1, you need to enter the name of the role. Once you have entered the name, click the Add role button.