This document outlines tools and strategies for building and extending one's professional network through social networking applications. It recommends starting by connecting with existing contacts on sites like Facebook, LinkedIn, and Twitter, and then exploring connections of contacts and inviting them to connect. It suggests contributing content to build networks and learn about professional groups, conferences and resources. The document also discusses how these networks can provide information, resources, jobs, presentations, conferences, teaching tools and contacts. It advises marketing oneself and one's ideas by sharing presentations and what you do through blogging, microblogging and directing people to sites without printing.