Clinical Key is a comprehensive medical resource featuring 1,100 e-books, 500 e-journals, 15,000 educational flyers, 13,000 videos, and a wealth of images and drug monographs. Users are encouraged to register for full access to features such as saving searches and viewing PDFs, and are advised to take time to explore its extensive content. Additionally, users can enhance their searches with the Isabel 'knowledge search' for broader information beyond Clinical Key.