Hi Heavensdoor,
The reset button is at the bottom of the left or right boards. It is labeled "Reset To Index". You may have to click it twice; first time resets to the beginning of the current tutorial, if one is active.
After you reset, click the box of the tutorial you want. You can get the supplies (if any) from the center window. I hope that helps.
If you wish, join the Happy Hippsters group (it's free) and you can get help in chat. TY to Chinrey!