This document provides an overview of free and low-cost resources for researching trademarks on the open web. It begins by listing types of trademark-related information that may need to be searched, such as trademark availability, distinctiveness, foreign translations, and domain name availability. It then discusses using the USPTO website to conduct basic and structured trademark searches. Basic searches provide a quick way to check for identical marks, while structured searches allow limiting results by goods/services, class, or other information. The document provides examples of searching for specific marks and classifications. Overall, the document outlines free search techniques using the USPTO website and open web to research trademark issues.