Hello, electric toothbrushes are very easy to use. It doesn’t matter if you don’t know how to use them. There will be instructions for use when you buy the toothbrush. I use an Oral-B electric toothbrush. I squeeze some toothpaste onto the toothbrush before use. Then put the toothbrush on your teeth before turning on the power, otherwise the toothpaste will fly everywhere. Then when brushing your teeth, brush from the outside to the inside. After brushing, turn off the switch first and then take it out to avoid foam flying out. Using an electric toothbrush may feel a bit awkward at first.