howdo i finger my girl?

Gently. Her clit, which is what you will be stimulating, is incredibly sensitive, and if you put too much pressure on it or are too rough, it will be overwhelming and painful. Make sure there's some moisture involved. Hopefully she's aroused so you can use her own natural lubricant to do the job. Take your time. Explore for a little bit, maybe slide a finger in her, and if she's comfortable with that, do two. Maintain good communication, ask her if she likes what you're doing and if it feels good. There's no manual on pleasing a woman because each one is different. Some might like it rough, some want soft. Try different things when rubbing her clit. If you don't know what that is, go look at some pictures. Use your finger tip, or your pad. Don't put too much pressure on it, unless she asks for it. Do circular motions, or back and forth, or up and down. When you finally find out what she likes, become an expert at doing just that.

Hope that helped. :)