This requires a Wikipedia username (step 1 above).
By adding adding yourself to your group "dashboard" tutors and instructors can mark your assignments and follow your progress and article improvements.
Step 3: Select your assigned article on the dashboard (make sure you are signed in)
Click "Dashboard homepage" and then choose "assign myself an article". Type in the article name assigned to your group by your tutor (see Elentra for a list of tutors and article assignments).