I believe that he's using term social to describe individuals outside your work (e.g. no lunches with personal friends). As you state networking is very importa

I believe that he's using term social to describe individuals outside your work (e.g. no lunches with personal friends). As you state networking is very important when you first start a job and the rest of the tips are geared to network effectively (find the organisational chart so you know who are the right people to meet).