Your courses are on your dashboard. Press Keep learning on a course to open the lesson you stopped at.
a-to-i.com/en/learn/ai-roadmap/l3
Move through the course
The list beside the lesson shows every section. A tick marks a finished lesson; the highlighted one is where you are.
Finish a lesson
A video counts once you have watched most of it; quizzes and projects count when you pass or they are approved.
Pick up anywhere
Progress is saved to your account, so you can switch device and continue from the same place.