Hello, this is a course in English grammar. Although it is aimed at non specialists and specialists who may be looking for a review, it does go into quite a bit of detail and you are expected to do a fair amount of work. Not only is there an extensive video that introduces all the various concepts and terms, but there are lots of documents that follow the course to give you practice and working things out for yourself, as well as tests at the end of each unit. So you can test yourself on how well you think you've understood everything. And there is a full answer key as well which will help you check your answers at the end to make sure you're on the right track. I really hope you enjoy it.