Typically a CV should include your contact details together with details of your education, work experience, qualifications, and skills.
This is really the bare minimum. However, in addition to this many people include more information including amongst other things work achievements, competencies, a personal profile and personal details. More information about the composition of a typical curriculum vitae can be found here.
This advice on CV basics is based on CV book extracts by one of our senior consultants, and is not for copy or distribution.