WOW Gold you have to log into account management through Blizzard's G4P doorway

On the "Account" screen, click on the World of Warcraft account on the right side of the screen to be taken to the World of Warcraft Game Management Screen.

Here you can select your payment type. Press "Continue" when you're finished. The next screen asks you to set up your subscription plan and enter your payment information.

For starters,Best Place To Buy WOW Gold, you have to log into account management through Blizzard's G4P doorway, you also can log through the World of Warcraft main site, but the result is that you'll just be transferred straight to the G4P login page.