We separated walkthrough video into 4 parts
1.1 Creating instructor account
1.2 Creating course
1.3 Creating quiz and assigning to course
2.1 Creating student account
2.2 Buying course
2.3 Taking course and quiz
2.4 Checking socres
3.1 Teacher check score manually
3.2 Student back to check pending score
4. Creating Certificate and Setting Badge
