  In this didactic article we explore the concept of quantum correlations
beyond entanglement. We begin by introducing and motivating the classically
correlated states and then showing how to quantify the quantum correlations
using an entropic approach, arriving at a well known measure called the quantum
discord. Quantum correlations and discord are then operationally linked with
the task of local broadcasting. We conclude by providing some alternative
perspectives on quantum correlations and how to measure them.
