The course is made up of posts, with a mix of written instruction and short videos.
The courses are designed to go in order, with sections of reading and then sections of video, to keep it interesting!
If you did the entire course in one sitting, It would take about 2 hours.
It's normal to watch and re-watch the training many times, to help the concepts sink in.
This is why an e-course is so great for simplify accounting and tax topics because you need to re-listen a few times and ask questions and implement, in order to actually "get it".