We strongly encourage you to take your time to go through ALL of the course material, as there is a lot of very useful information, especially in the additional videos.
You can use the “Listen page summary” feature where it’s available, or you can check your browsers menu to see if it has a built in “Listen to Page” feature.
It’s best to read this page and if time permits, to also listen to the audio, so you can maximize the benefit you get from the course material.