Rummy 500 is one of the most popular forms of rummy. It is easy to learn and even easier to play online.
If you know the game you can fly through this tutorial so you understand the online format.
If you need to learn the game, take a little longer and get the finer points.
After the tutorial you will be prompted to download the game. Do this, and you get started playing right away. You will have to sign up for an account, and confirm your email address. Then you can play online rummy live with other people.