This video shows how to make a simple quiz with multiple choice and free-response items that will be automatically graded and provide instant feedback to the student.  

If you have an assignment in mind that can't be automatically graded, such as a student essay, reflection, photo upload, document upload, project, or other student creation, this video is for you.  

This shows what the student view of the assignment process looks like.  Watch this so you will be prepared to answer student and parent questions.  

This video covers how to give grades and feedback on submitted student work.