Books, videos, and classes can only take you so far. If you don't use the knowledge you've acquired, there's no use in keeping it around, and the brain will sl

Books, videos, and classes can only take you so far. If you don't use the knowledge you've acquired, there's no use in keeping it around, and the brain will slowly "forget" things over time. What is most important is having a solid base and then getting real world experience. This applies to all fields of expertise.