You could specialize in pay-per-click (PPC) advertising, or make a killer social media manager.

FORBES: The Only Essential Skill You Need To Be Successful Online

These activities include web lead forms on the corp site and key landing pages, pay-per-click (PPC) programs, organic search strategies and email campaigns that leverage keywords that lead to specific landing pages.

FORBES: 5 Disruptive Essentials of a High Velocity Sales Model