LinkedIn is a social network important for professional networking and career development. It is most useful for tech professionals and those looking to expand their professional network by connecting with former classmates and coworkers. When creating a LinkedIn profile, the picture, headline, and summary should be completed first to provide important information to connections. Users can join groups related to their industry, products, or professional affiliations to stay up-to-date and enhance their online presence. Proper social media etiquette should be followed when using LinkedIn.