Cats are notoriously difficult to train. They aren't biddable like dogs, meaning they are not "team players." For a cat, you have to approach it as if working with a mercenary. What's in it for them?
Don't get me wrong. I love cats and have all of my life. But they do think the world revolves around them.
I think you start by noticing something they like to do and seeing if you can put that on command. One of my cats liked opening the cabinet under the kitchen sink where I kept her food. So that was the first thing I put on command for her.
I also think clicker training in particular works well for cats. Dogs are cool with you posing their body parts so long as you've done body desensitization with them and handle them gently. I've never succeeded in convincing a cat that me putting his paw someplace he didn't think of himself was ever going to fly. You have to make them think it was their idea, and clicker training when done correctly does just that. From the cat's perspective the question isn't "what does the person want me to do?" but "how can I get that silly human to click the thingy that makes the yum appear?" Think about how good cats are at getting humans to open doors for them when they want. That is how cats are wired. Let them manipulate you into them doing what you wanted so that you cough up the treat.
Ping pong puppy also works for kitties. I've played a variation I invented called "Kitten-ockey," a contraction of "Kitten" and "hockey." It involves a rubber ball, a cat, two rulers, two human players and a hallway, but it does not teach the cat to come when called. Just a fun game. The humans tap the ball back and forth and the cat randomly changes the ball's direction so you never know where the ball will go next. The game ends when the cat gets bored and leaves or he runs off with the ball.
Here are some instructions (three versions) for ping pong puppy:http://www.animalbehaviorcollege.com/blog/teach-your-dog-to-come-through-puppy-ping-pong/http://www.petsadviser.com/behaviors/how-to-train-a-dog-in-recall/http://www.overthemoondog.com/basic-training/ping-pong-pup-training-basic-reliable-recall