Teachers / Administrators can access their accounts via Google Login (just click on "Sign in with Google" from the Defined Learning homepage).
Once logged in, teachers can sync their class rosters by clicking on "My Classes".
Once there, click on the "G-Import Classes" tab and follow the prompts.

Links to walk-through videos of the site below:

Module 1 - Logging In

Module 2: Finding your Project

Module 3: Customization

Module 4: Assign/Share

Module 5: Evaluating and Assessing Student Work

Module 6: Student Perspective

Module 7: Student Dashboard

Module 8: Teacher Groups

Module 9: Folders