All of them will be shown step by step.
Some components are relatively unimportant in their effect on overall circuit behavior.
Sense resistors are not one of them. It may only be a resistor, but it's a very important resistor with subtleties that can impede design progress. At the same time, they must hold their resistance value, for it contributes proportionally to the current measurement. Using a clipped length of copper wire will demonstrate this point. In a motor drive, the torque will fall off as the motor operates due to the increasing resistance of the copper sense resistor, as it heats.