The video is free to watch. You will need to purchase the additional materials packet for your student to get the full benefit of the class. Materials include any maps, worksheets, visual aids, etc. used in the video. They are offered as a download, so you will receive them as soon as payment is made. Video classes do NOT have to be done in chronological order, nor do you have to do them all. Feel free to pick and choose according to your student's needs.