Please how do I use the printer cable in connecting my midi help please
Depending on what you are connecting and your MIDI Interface you would use either a USB cable or (mostly, but not exclusively, for older stuff) a MIDI cable.
But in any case you don’t need a printer cable.
If by chance you are calling your USB cable a printer cable all you need to do is plug it into your equipment and the other end into a USB port on your computer. Then Windows should recognize it as an available MIDI input. If not you may need to load a driver for the equipment which you’d get from the manufacturer of the equipment.