The video tutorial explains the concept of parameters or weights in a deep neural network. It uses a simple example with three features and two layers to illustrate the structure of a neural network. The tutorial details the number of neurons in each layer and emphasizes the importance of counting the total number of weights, which are the parameters of the network. A hint is provided to focus on an extra edge when calculating parameters, with a promise to reveal the solution in the next video.

What new insight or understanding did you gain from this video?