Help switch and fortnite

[CupoTeap]

So, I have agreed that dd can have this after getting a switch for xmas however I have zero idea about the online stuff. I had bought games but couldn't find this one, I know now it's only available to be downloaded. How do I set it up and keep her safe. Please assume I have zero knowledge thank you!

go to the Nintendo eShop from the device's home screen. From there, you can search for Fortnite, choose to download it, and get start playing. you can also set up parental controls on it, by following these instructions. make sure to chat her through your rules before you let her play Fortnite (such as no playing with strangers, only accept friend requests from people that you know).