Install the CP2101 Drivers

CP2102 Drivers for Mac.

Download the Arduino IDE

1. Head here: https://www.arduino.cc/
2. Click on the Software Button.
3. Click on the Arduino IDE version for the type of system you are running.

Add the ESP8266 Board to the Arduino IDE

1. Open the Arduino IDE
2. Go to Boards Manager
3. Tools -> Board: -> Boards Manager -> Filter your search ( Type esp8266 )
4. esp8266
5. by ESP8266 Community version x.x.x
6. Click the Install Button

Change the Serial Port

1. Click on the Tools -> Port
2. Select the Serial Port in use ( Should look like /dev/cu.usbserial-0001 ) or similar