Sometimes I think guys just don't have a clue about a woman's body. Judging from what my past lovers have told me I would be right. After having sex with a girl a few times, I can usually have them cumming within two minutes of initiating sex. I have heard many stories about all the things that guys have to do to get a girl in the mood. The easiest way to get a girl in the mood is for her body to know that you have knowledge to make her cum like she has never cum before. Then it becomes a subconscious effort on the girl's part. You just touch her and she knows what is about to happen. The juices kick in and all that time that is spent on foreplay isn't needed. I am not saying don't have foreplay. It is a good thing. Caressing a woman's body is incredible; so is running your lips across it. There is nothing better than feeling a woman tremble at your touch. So do not stop the foreplay.
Let's talk about a woman's clit. This is what it's all about. This thing only has one purpose to allow a woman to get off. They come in many different sizes. Generally speaking about the size of the tip of your pinky finger. It is location is at the top of the vagina; there is a hood of skin over it when it isn't aroused. When it is aroused then it will usually pop out of it's hood. Be careful, it is very sensitive. Don't rub it while it is dry. This will cause her pain and she will not give you anything! Make sure anything you use against it is well lubricated; whether it is a finger or a tongue.
Fingering a clit for most of us guys is very difficult. We have tendency to be very rough. Most girls do not enjoy this; you must be very gentle. If your finger is very wet then just try rolling your finger around the clit this should start getting to her. Stop every now and then, run your finger up and down her lips, this has two effects. One she will really enjoy it. The lips are very sensitive also. For your purpose it will rewet your finger. No need to make it obvious, by lubing your finger by putting it in your mouth. Some women find this to be a turn off, use her juices to lube your finger. She will just think the rubbing of the lips is just part of the action!