If you are currently taking any kind of Interior Design classes with a degree in the field, you will need to start looking for and applying for internships.  There are a lot of resources that can help you find where to apply for these internships, so make sure you ask your professor or counselor to see about getting a current directory of Interior Design firms looking for interns.  Interior Design Internship programs are a way to make sure you get a working knowledge of the industry and hands-on experience with Interior Design and clients.  Don’t wait until you are done with your classes, get started while you are still in school.