Answer : There are many ways to learn the basics of interior design. All you need is a basic introduction to color theory, perspective, scale, and proportioning. The best way to learn these theories is through reading architectural drawing textbooks found at your library or bookstore. Once you take on projects for clients for your portfolio, the experience will help accelerate your learning curve even more - plus it's an added bonus that this will require actual hands-on work! Idea generation has often been cited as one of the most difficult aspects of being an interior designer because creativity is something that cannot be taught systematically.