Although I can't claim to be an expert on the subject, being a woman myself, I quite understand the mechanics of a woman's mind. To know your woman better, you need to really be able to "listen" to her. And when I say "listen", I mean using not just your auditory senses, but using your other senses as well.
A woman communicates by using more than mere words. Usually, she speaks with body language, eyes, and sometimes even through touch. If you were really cued in to your woman, you would be able to read her mind quite easily. For beginners, read some famous quotes about women to understand a woman better. You could also read funny quotes about women to know the funny side of women.