Welcome to drawingnow!
To play any tutorial just click "play" at the lower left corner of the box, just look for a symbol like this: ► and click play.
If you don't know how to move foward you see these steps at the right of the box? Well you can click on each step to fast foward it or click ►► to fast foward the tutorial.
Hope it helps! If that isn't what you mean then sorry