I really wanted to be an interior designer once upon a time ago and took several classes in college and did end up working for a commercial design company (but only as a sales assistant and then in went into sales myself) and learned a lot but the most fun I have is just experimenting in my own home. I remember one class I took, the teacher had us use magazines, and tear out any photo of rooms or furniture and accessories that we liked and make a photo collage on poster board. She told us that this exercise can be a great tool to use with clients in the future because it helps them to see what they are attracted to and it will help you as a designer to meet their needs. So since then I have always bought tons of magazines and have done it for myself. It is really fun to do.