This book is not a step by step syllabus to follow blindly. Itten wrote this book to share the fundamental principles that he taught all his students (no matter how advanced) before allowing them to pursue higher classes and goals at his school.
The book is broken down into sections that (to anyone who's had art training) seem simple enough: chiaroscuro, form, color, rhythm, etc. but Itten teaches not so much the technical aspect of art as a new way of seeing the world, a way of creating from the whole body and mind, not just with a paintbrush (or computer graphics program).
The sections are all punctuated with many examples of student work that relate to the topic covered. Often, it is these examples that really drive his points home.
Just as Itten believed that everyone was capable of being creative and thought the basic course was valuable to all levels of art students and even teachers, this book is applicable for both those who are looking for an introduction into creating, and those who consider themselves expert artists already. I guarantee there will be at least one idea in the book to make you stop and ponder and suddenly challenge your way of thinking on the matter.