Copyrighting your material is extremely important because it protects your rights to the materials. It is also important to our professionals as they are always dealing with rights issues. Copyright law is pretty straightforward. Once you create something and have proof that it is your original work - then you own the copyright. Here is how the US Copyright defines Copyright - "Your work is under copyright protection the moment it is created and fixed in a tangible form that it is perceptible either directly or with the aid of a machine or device."