MS PAINT
Paint is an application which is used to draw pictures. To start Paint, execute the following.
Start->All Programs->Accessories->Paint
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The paint windows opens up on the screen. And it looks like this.

The Tool Box has the various tools used for drawing and coloring.

To use any of the tools in the tool box, click on the tool to select it. If you want to draw a rectangle, click on the rectangle. Move the mouse pointer to the drawing area, click and drag to draw the figure.

To color the pictures, you can select the colour of your choice by clicking on the color box and then using one of the coloring tools from the tool box.