An estimated seven in ten American employees want a new job. Millions more are making for their first career step after graduating. And most of them will use LinkedIn—or try. Because while LinkedIn is the dominant platform for hiring, networking, and recruiting, very few job seekers know how to maximize its incredible power. Here are two who do: Omar Garriott and Jeremy Schifeling, career coaches who ran LinkedIn's education team, then formed the Job InSiders to advise all levels of job seekers. Now they're sharing all they know in Linked, the definitive guide to conquering LinkedIn, written for everyone from the newly minted college graduate to midlife career-changer.