Hi sunstallion,
You may want to check out
this older thread about cartomancy methods, in which several people gave good recommendations and their thoughts on various authors. I listed my favorites there, which are Kapherus's
The Art of Cartomancy website, and a
book by Regina Russell (more details are in my post in that thread.)
I also really love the
Playing Card Oracles by Ana Cortez. There is a free ebook that you can download, and she has some videos on YouTube. She has her own deck available from US Games, but you can use a regular pack of playing cards, too. She's a little less down-and-dirty-fortune-teller-y in style than the other methods, so it depends on what you're looking for. She has several neat layouts and combines geomancy in her method to great effect.
Many people like the book by Louise Woods that Lee mentions in that thread, but unfortunately the price for used copies has gone up dramatically. (And beware if you search for it online, there is another cartomancy book with a similar name by someone else with the last name of Woods! If you go to buy one, make sure it's the author you mean.)
The Hedgewytchery method is very popular, but the author's website is no longer up and running. You can find the site archived here, though:
Hedgewytchery site on the Wayback Machine
You'll want to download the three lessons with pages titled, "The Wise and Subtle Arts of Cartomancy", "The Wytch of Middling Memory", and "The Wytch of Exceptional Memory". You can find a very old Aeclectic thread about the method
here. In
this post, I give a link where you can download the images of the missing four layouts.
And finally, if you are very familiar with astrology, you may be interested in
this blog post by Kapherus. He reviews a pamphlet called
Card Reading for Astrologers by Carolyn R Dodson. I got myself a copy, and it's a clever method that would be relatively easy for someone with a good background in astrology.
Here are two more really good threads on cartomancy to check out (lots of methods):
http://www.tarotforum.net/showthread.php?t=174903
http://www.tarotforum.net/showthread.php?t=97772