This page explains how to get online via a wireless connection with your Nintendo Switch.
Internet connection (with a wireless connection), Nintendo Switch Support
Switch] How can I stop all wireless communications? (Airplane Mode settings), Q&A, Support
How to connect two (or more) Nintendo Switch consoles for local wireless play
Nintendo Support: How to Connect to the Internet Using a Wireless Network
How to Connect to the Internet - Nintendo Switch Guide - IGN
How To Connect A Wireless Controller To Nintendo Switch - GameSpot
Switch Won't Connect to WiFi? 11 Quick Fixes to Try
Nintendo Switch: How to Connect to Wifi Internet Network
Nintendo Support: How to Set Up a Router's Port Forwarding for a Nintendo Switch Console
Your Nintendo Switch Won't Connect to the Internet? Here's What to Do
Why does the Nintendo Switch not have an option for wired connection? - Quora
The Nintendo Switch Has Bluetooth — Here's How to Use It
Nintendo Switch XLink Kai Tutorial (Play LAN Games Online)