When you start Quote Deck, you will be greeted with a random quote. If it is no good, simply swipe or flick the card in any direction to throw it away and get another one.
You can mark any quote as a favorite by tapping the star in the upper left corner. Once you have some favorites, just tap the bottom scroll button and check the "Show only favorites" check box to just get your favorite quotes.
If you find a quote that you really love, why not share it with your friends? Tap the top right share button to share it by e-mail or post it on Facebook.