Johnny (@J0hnnyXm4s) is a penetration tester for Redlegg and an accomplished speaker at security conferences around the United States and Iceland. One of Johnny's more recent talks is titled "That's not my RJ45 Jack" which covers, among other topics, how to interact with people. I saw this talk in April when I went to BSides Nashville and it has a lot of good information that can be applied to networking with people in general.