The first link is a .pdf file graciously provided by Perry van Beek, a LinkedIn, social sales, and networking expert. His point-by-point guide gives an overview of the critical components of building an effective LinkedIn profile.
The second link is an excellent compendium of frequently-asked questions about networking that apply to anyone, not just (as the website name implies) those under 40.
The third link is a free BrightCrowd 30-day networking course and weekly email “for people who know they need to “network”, but aren’t always sure where to begin.”
The fourth link is a podcast on networks and relationships that gives insight to how the human brain works with regard to networking and socializing.
NPR Ted Radio Hour Podcast on networks and relationships
The fifth link is to the Texas A&M Career Resource Center article, “Effective Networking,” which gives a brief overview of the art of networking.