To draw, set it to a spot, then click the green flag to draw. To erase, you can only do erase all, so click that. I'll update every once in a while, but that's it so far. Once you drag the pencil to where you want, click the green flag and it'll go to the center of the canvas.
I'm a rookie, so you can tell it was only me since this sucks, you can use it to hang out or whatever JUST NO CUSSING OR I WILL REPORT YOU! - u -