You can start out coding the Adafruit Circuit Playground Express using the simulator or, get the real board here: Adafruit Circuit Playground Express.
When you plug in your Adafruit Circuit Playground Express with a USB cable, it will appear as new storage device called CPLAYBOOT.
When your Adafruit Circuit Playground Express is connected to your computer with the micro USB, it doesn’t need another power source. If it’s not connected to your computer, tablet or mobile, you will need 3 x AAA 1.5 V batteries to power it.
The pins labeled 3.3V and GND are the power supply pins. You can attach an external device such as a motor to these and power it using the battery or USB.
If you want, you can also buy the base kit which includes a battery pack and batteries.
For Windows users, to fully use the USB connection, you may need to install a driver. See the Windows driver installation page at https://www.adafruit.com.
Updates for the bootloader are found here: Updating the bootloader
Your Adafruit Circuit Playground Express may encounter a situation that prevents it from running your code. The system software that runs the programs on your board may notify you that an error occurred. These errors are called panic codes and are numbers displayed in the pixels on the board. See the Error codes page for the types of errors that could happen on the Adafruit Circuit Playground Express.
Take a look at the complete overview of the Adafruit Circuit Playground Express.
