OIT sent an email out last week (10/21/14) with tips and other information on using the Grade Book in D2L since we are in (or for those of us on the 10 week scheduled, rapidly moving past) the time for midterm exams. This is also useful information for preparing for final exams and final grades.
The link below takes you to a Google doc site. Please don't hesitate to let me know if you have any trouble accessing the document or if you have further questions.
Tips for Creating and Using Your Grade Book in D2L