We've set up this introduction video so that the captions are viewable at all times but for the remainder of the videos in this module, you can use the CC button on the bottom right of the video to turn them on or off depending on your preferences. we felt it was important for everyone accessing these lessons to experience some of the content with captions on as it's a vital tool for accessibility, and as you move through the chapters you can choose which option works best for you.