Knowing how to stimulate the clitoris properly is important because the clit is so damned sensitive. If a guy is too keen he can easily be too rough with her clit and cause her some discomfort. For many women, it is actually better not to stimulate the clitoris directly and to press areas around the clit so that the clit is massaged indirectly. For example, rubbing in a circular motion around the clit or stroking the clitoris hood can also work well. Some girls can take direct stimulation so you need to figure out how sensitive her clit is then you can know how to stimulate her clitoris.