This is a short entry to bring your attention to a source appropriately named: The Fingerprint Sourcebook!
If you wish to know more, review what you know, or dig into the details when it comes to fingerprints. This is where you should always begin. Below is a link to where the text can be found, for free last time I checked. It is the best and most reliable fingerprint information, written by the great minds of our current day!
For everything fingerprint, begin here!