Even though Performing your way in the Workbook, This website will remember which lesson you were researching. Whenever you come, just pick My Lesson, and you'll resume where you left off. Some learners prefer to study the lessons on the calendar basis: Lesson 1 on January 1st; Lesson 2 on https://www.youtube.com/watch?v=V7lEomNLUOE&t=8s