The online lesson videos and your textbooks are BFFs.
Translation? This means that you should always have your books open when you are going through the lesson videos.
There is lesson information in your textbooks, which is helpful to read as you go through the videos.
More importantly, there are LSAT questions in the textbooks that the lesson videos will prompt you to complete.
These allow you to practice the skills and concepts being covered the lesson videos. Thus, you need to do the questions in the textbooks in order to get the most out of the lessons!