There are two main paths in advertising. You can work on the creative side or you can work on the account side. Also, think about whether you want to be "in house" at a corporation or at an agency with multiple clients.
Agency life is ideal if you like a lot of variety each day. If you prefer to focus within one industry and one corporate brand, consider corporate positions.
The American Association of Advertising Agencies, a professional organization for advertising pros, keeps an updated list of job titles and descriptions to help you learn more about the field. Click the button below: