It is important that you can access the BeagleBone Blue through the serial connection. However, you're going to want a connection that is of higher bandwidth. Also, it will be very helpful to connect to the board without having a physical connection. Fortunately, the BeagleBone Blue has wireless LAN capability on board to make this easy. You now have access to the Debian Linux system and can type in commands and see their result in a terminal window. You'll use this capability to understand the WLAN connection on the BeagleBone Blue.
Type in ifconfig at the prompt. You should get a display like the following:
This information gives you an idea about how you can connect to the internet, and ...
