For works first published after March 1, 1989, an author need not include a copyright notice to be protected under the law. Although a notice is not required, it’s super worth it for you to obtain one and list it on your website. When a work contains a valid copyright notice, an infringer cannot claim in court that s/he wasn’t aware the work was copyrighted. Thus, an author has a greater chance to win a copyright infringement case and spend much less litigating in the process if s/he has a copyright notice.
If a work is created on or after January 1, 1978 then it is protected for a term of the life of the author plus 70 years. However, if the work is a “work for hire” or is published under a pseudonym, the copyright lasts between 95 and 120 years, depending on the date the work is published.
Regarding your specific question, the U.S. Copyright Office has some helpful info on how to copyright& . Be sure to check out Stanford’s Copyright & Fair Use too.
If you’d prefer a copyright attorney to take care of everything then come visit. On a daily basis we provide fast, effective and economical solutions for bootstrapped entrepreneurs. Our site offers free price quotes & consultations. Feel free to message me directly to chat further about any other IP questions that you face as well.