I created this tutorial with the iPad version of the game. The rules are identical to the tabletop version, the only difference being that the iOS version only supports two active players. The major bonus to playing this on the iPad is that all the mechanics of the game are automated, so if you're unsure on how certain aspects of the game play out, the computer does it for you. It's a fantastic way to learn the game!
This strategy video is really geared towards those who have played at least once and are familiar with the basic rules. If you're curious about the game, I highly recommend watching Grudunza's game review on YouTube. His videos provide a great overview of the game rules and really compliment the rulebook.