<P> The organization started in 2004 when Sal Khan tutored one of his cousins on the Internet using a service called Yahoo Doodle Images . After a while , Khan 's other cousins began to use his tutoring service . Because of the demand , Khan decided to make his videos watchable on the Internet , so he published his content on YouTube . Later , he used a drawing application called SmoothDraw , and now uses a Wacom tablet to draw using ArtRage . Tutorials are recorded on the computer . </P>
who is the founder of khan academy of hugli popular free online education platform
Sal Khan