Connect to the Internet - Learn how to connect your Raspberry Pi to the internet
You'll want to get your Pi connected to the internet. If you're using a wired ethernet connection, you should be all set. It will automatically connect to your network and the internet. If you are planning on using WiFi, you'll need to enter your credentials. There are two easy ways to do this but both will require a keyboard (to enter your password) so if you didn't purchase one of our systems that includes the keyboard/mouse you'll need to provide your own USB keyboard for this step. Pick whichever method works best for you. And don't worry, you only need to do this once and the Pi will remember the next time you turn on your system.
CONNECTING FROM RETROPIE
Open the main RetroPie menu and select WIFI. This will open the WiFi menu. Use the arrow keys on your keyboard to select CONNECT TO WIFI NETWORK which will open a list of all the availalbe WiFi networks. Select your network from the list and you'll be prompted to enter your key/password. Please note that while you're entering your password it will not show up on-screen. This is normal and doesn't mean your keyboard is broken. Just enter your password correctly and once you hit enter your Pi will communicate and negotiate with your router to obtain an IP address. Assuming you entered the correct key/password it should complete in just a few seconds and you'll now see your Pi's IP address listed above the menu options. You are now connected to your WiFi network and can exit back to RetroPie.
CONNECTING FROM PIXEL OS
Select PixelOS from the menu in RetroPie and it will load. Once loaded, click on the symbol in the bottom right corner by the clock and select your network from the list of available networks. It will ask you to enter your key/password. Once it negotiates an IP address from your router, you'll be connected to the internet. You can open up the web browser to verify that you have an internet connection.