What are the benefits of participating in an internship at the undergraduate level?

What is an “internship”?

When should I begin my internship project?

Who can I work with on my internship project?

What does the process of selecting an internship, applying to one, and participating in one look like?

What if my selected internship declines my application?

When/where/how/with whom will I complete my internship?

Will I get paid for my internship?