That is as simple as it gets.
The red wire goes to a resistor. The resistor gets connected to the first LED. Only to one LED.
The first LED wil be connected to the resistor at one leg and another LED at the other leg.
The second LED is connected to the first LED at one leg and the black wire at the other leg of the LED.
The symbol marked "ground" is what you are calling "black".
The red wire goes to a resistor. The resistor gets connected to the first LED. Only to one LED.
The first LED wil be connected to the resistor at one leg and another LED at the other leg.
The second LED is connected to the first LED at one leg and the black wire at the other leg of the LED.
The symbol marked "ground" is what you are calling "black".