If you are looking for a more advanced program then take a look at PaintTool SAI 1.1.0 – this is an enhanced version of Windows Paint that comes with extended functionality but keeps the learning curve to a minimum.
It is not a bad tool at all but some more advanced users may find it not that useful. This small program offers basic paint functionality that is just enough for you to create simple images and paint a picture here and there. Ever since the first version of Windows was released this very popular operating system has always come with a simple tool called Paint.