Although internships are often categorized as jobs, they are more like apprenticeships.  Internships are temporary and may or may not be paid. The emphasis during the job is training, which is why most interns are college or high school students who are studying in majors relating to their internship position.

The length of the internship depends on the employer in charge. Usually, an internship lasts the duration of a semester at school. However, 6-12 week summertime sessions or shorter 4-6 week winter break sessions might also be available.

You don't apply for an internship in the same way you would a regular job. Although you should treat your application process professionally, your experience is less important than your willingness to learn, relation of the internship to your major, and recommendations.

Select a country to find the available options concerning jobs as an intern: 

UK and Europe                                             USA and Canada

Australia and New Zealand                         Asia

Central and South America                       Rest of Africa