The European Patent Office provides this online presentation to help you get started with patent searching.
Mississippi Library Commission
"The Mississippi Library Commission was designated as an official Patent & Trademark Depository Library (PTDL) in 1990 by the U.S. Department of Commerce, Patent and Trademark Office. A wide variety of services are provided from extensive holdings of patent & trademark resources. While the primary users are inventors, attorneys, and researchers. the services are open to the general public."