The first tarot cards were playing cards. I've always wanted to delve into using playing cards for tarot cards because the decks are cheaper, and from my experience just as accurate with information.
I created my first deck probably about a year ago and they're very accurate. I did a reading today because I wanted to know if the decision to move to a new home right after college to help finish summer classes and try to get a nice first job was a good idea. I was told three things, to make a money talisman, burn a candle for prosperity and that lies or gossip may be going on right now.
Here are just a few links that I've found useful to understanding playing cards as tarot cards.
Card Meanings and Combinations
Using regular playing cards @ Sarena's Tarot