Hi, welcome to drawing book. It is a whiteboard that you can draw on. To draw, long space key. Let go of your space key if you want to stop drawing. To change the colour of your pen, you need to Press the black and white button a the right side top of your computer and type in the colour that you want. ( make sure to to always type a capital letter in the start of a word) To make your pen size bigger, press the plus button at the left side top of your computer. To make your pen size smaller, press the minus button at the left side top of your computer beside the plus icon.