It was an excellent experience. The material is so good and simplified.I'm so glad I took this step and so proud of it. The videos were about 20 mins average, They usually repeat what's in the reading folder but briefly. so I used to read first then watch the video. The quizzes are multiple choices that you will find fine if you read the reading folder well and watched the video carefully. The written assignments were challenging, It's considered the hardest part of the course. I wish you all good luck.