Internship = one month or more in a company or organisation. Paid or unpaid but needs to be agreed in advance. Definitely only do an internship if you feel prepared or it will be miserable!
This film with Robert De Niro as an ‘older’ intern (age 70) might help give you some handy hints 🙂
“I won’t take anyone on unless I know they have been fully prepared for an internship. I am looking for positive attitude and initiative above everything else. Even their grades. You don’t learn that from books. You learn that by ‘getting out there!”, Bernadette, CEO Fashion magazine.