As with any career that requires creativity the best chance to get a job easily in the world of interior design is to be very good at what you do. Have a portfolio including plenty of references and testimonials and advertise to get your name out there.
you don't have to but it is hard to get hired without experience or a degree
There are many graduate schools that offer interior design. It is hard to give a list without knowing more about what you are looking for in a graduate school. Try a website like gradschools.com and search for interior design. From there, you can choose a location and see the graduate schools in that area that offer interior design. There are actually hundreds of graduate programs in interior design. Here's a good resource to find one near you : http://www.gradschools.com/Subject/Interior-and-Environmental-Design/95.html
Some classic books about interior design are The Better Homes and Garden books. These interior design books have been around for a long time. Another good Interior Design Book is Home by Design.
Interior design
You go to a college that offers a degree in interior design.
I bet Interior Design Institute is a scam.
An online site that specializes in interior design software is www.homedesignersoftware.com/interior/. After you figure out how you want to design, then you can go to Home Depot to buy your supplies.
The Savannah College of Art and Design (SCAD) has a highly rated interior design program. Visit: www.scad.edu/interior-design The University of South Carolina offers a major in interior design: www.sc.edu/career/la/art.html
To study interior design, students typically take classes in design theory, drawing and drafting, color theory, space planning, lighting, materials and finishes, CAD software, building codes, and interior design history.
The Society of British Interior Design was created in 2009.
ITT offers a class in interior design
If you mean interior design, then yes.