LinkedIn is a professional social network with over 200 million members in over 200 countries. Users can create a digital resume with their profile, job history, education, and skills. The profile helps with search engine results and networking. Users can connect with contacts, follow companies, join groups in their industry or interests, and endorse or recommend each other's skills. Being an active member includes updating your status daily, engaging with connections' posts, sending connection invites, participating in discussions, and interacting with followed companies.