The material provided was very concise. The PDFs provided are viewable online as well as available for download at any time (no need to do each unit in succession, and you can refer to the content again once you have finished the course).
I have been teaching for years and I still learned a new few things. There are also a lot of references to other online materials and resources to really help you improve your knowledge of the subject while improving your quality as a teacher at the same time.
The test questions are clear and the answers challenge you to make sure you have understood the materials. Multiple choice questions are my favourite kind of test. I was still stumped by a few questions though. That didn't matter much. You are allowed to review your answers after your first attempt, review the materials, then try again.
If you want to watch the videos though, you will need a VPN if youtube is not freely accessible in your country. Apart from that, it was a good experience.