Anyone know anything about meditation?

Anyone know anything about meditation? I am interested in meditating and visualizing, and I need a book of the basics. I also would like the know the differences between the various ways to meditate, like for example there is zen meditation and then there is Hindi meditation involving cleansing the chakras or something like that. I need to learn what all this is about. Do you have a book that might explain this to me that you can refer me to? I greatly appreciate this.