Well, right now is a bad time to join. They are having really bad billing issues and unfortunately tons of people (including me) got billed multiple times when it wasn't even time for us to be billed. I was fortunate enough to get billed only 12 times, while some people got billed upwards to 30-40. This is the only reason that I would hold off of starting an account with them at this time, but of course the final decision is up to you.
If you chose to sign up, here is how you do it:
1: Go to their
Main Website
2: Click on "Get Started" at the top.
3: Follow the instructions to create a new trial account, which you will later upgrade to a full account.
4: Once you have your account finalized, it will take you to a screen where you can download your Mac client for the game.
5: You can now either play the game until you decide to upgrade your account, or you can upgrade it while you are downloading the client. To do this, right below where the link is to download the client, there is a link to upgrade your account. Click that then it will take you to a page where you again, have to click on "Upgrade now!".
6: This will take you to your account page where you follow the instructions to input your credit/debit card info or a prepaid game time card.
Have fun!
