First, you must know how to locate and stimulate your lover's clitoris. If you have not quite gotten this far in your sexual education, I will here provide a quick review.
The clitoris is much easier to locate if your lover is already sexually excited. If you do not know how to sexually excite your lover at all, I probably cannot help you.
Basically, your lover's external pussy consists of two layers of 'lips'. The outer lips (labia majora) are thick and covered with hair. On young women and those with little or no sexual experience, the inner, second layer of 'lips' (labia minora) may not be at all visible unless the outer lips are spread, or the woman reaches a certain level of excitement, or both.
Many factors can affect the look and feel and elasticity of these two sets of lips: a woman's age, her level of sexual activity, her level of sexual excitement; one or more pregnancies and deliveries, to name a few. The inner lips of her pussy may range from totally un-visible, to protruding several inches outside the inner lips. These inner lips are often darker in color and more wrinkled in appearance. They also fill with blood and darken with the rise in sexual stimulation. Excellent photos and Illustrations of the organs and structures of a woman's body pertinent to this discussion can be found on Wikipedia.
At the upper extremity of the inner. or minor,lips, there is a tight flap of tissue commonly called the clitoral hood, I usually refer to this structure as the female foreskin, for when it is retracted it exposes the tiny head of the clitoris. This organ, the clitoris, can vary as widely in size as the male penis. It can also increase in size by the type and amount of stimulation it receives. At the beginning of her sexual life, a woman's clitoris may appear very tiny and be extremely sensitive, even painful if manipulated roughly. (somewhat like the head of the male penis, but even more sensitive) In the same way that a male penis head becomes desensitized through the mutilation of circumcision and years of exposure to the rough texture of clothing, the female clitoris may become less sensitive through use. In many countries, it is common to also desensitize female clitorises through the ritual mutilation of circumcision. Like the penis head, the clitoris can be somewhat desensitized by constant or frequent stimulation. This can be a good thing because many women report their clits are simply too sensitive for prolonged, continuous or rough contact. However, through years of stimulation, the clit can be desensitized and may often become larger overall, the visible portion even measuring up to one or even one-and-one half inches in length in some cases.
What is important is that what most people perceive to be the clitoris is merely the external head of the clit, the body of which extends into the inner vaginal wall. This organ's inner and outer portions grow and fill with blood during arousal, much like the male penis. This fact is very important and may be the reason why many women report strong clitoral orgasms, even through only intercourse.
For the proper location and stimulation of the G-spot, or female prostate, it is important that proper stimulation with fingers, lips, tongue and even facial hair first be applied to and around the clitoris. Much lubrication is required! For me, saliva works best. The man (or other lover) will know when the clit and g-spot are being successfully stimulated because the fluid emanating from the woman will be vastly increased.
The point that should be thoroughly stimulated for maximum g-spot arousal is immediately inside the vagina, behind the clitoris and urethra. Stimulation of this area should at first be approached very cautiously. The woman may report what she feels as a strong need to urinate. This is because several glands which ejaculate their contents during g-spot orgasm discharge their fluids through the urethra, and because the entire area fills with blood during intense arousal, which puts additional pressure on the urethra.
