ok, so I found it. For those who are also searching for the study material, you have to do the following.
Once your on your subject of interest (Mine was "Music Theory: Level 1") from the main page, click on "Show all". Then scroll down to the bottom of all the videos. You might require to click on "Show More". The material are all listed their at the bottom after all the videos. Everything is packed together which is related to your subject / lesson. It would make it easier if a link gets placed under each lesson which one can click on to download the study material.