This article focuses on two topics:
In calculating the Unadjusted Salary Cap, the first step is to calculate Player Cost, but this Nugget (#4B) only discusses Player Cost as an intermediate step in figuring out the Unadjusted Salary Cap, which is the real focus here.
So, this nugget will first address Player Cost, but then move quickly to the real goal of understanding how to calculate the Unadjusted Salary Cap.