Designing a PCB in KiCad in 20 minutes

Thank you! I appreciate the info. I see now that the resistor value determines the amount of current that flows through a circuit (in this case) and the current driven component has to be able to utilize the available current. I did find it interesting that the resistors can be placed either way, but the LEDs are directional. I caught on to them being a sort of diode, which I will study further.