To edit your account information on DavesBillboard.com: 1. Log in using the link in the upper right corner and enter your username or email and password. 2. Select "Edit Account/Login Info" from the account dashboard to access your account update page. 3. Here you can change your email address by deleting the existing one, typing the new one, and clicking "Update" after entering your password. 4. You can also change your username by deleting the existing one, choosing a new one, and clicking "Update" after entering your password.