Need help installing a new router box and configuring Wi-Fi

I'm looking for a practical tech person to install a new router box and help set up the home Wi-Fi. The job involves connecting the modem, mounting the router if needed, and ensuring a stable network across the living spaces. I’d also like basic security setup (strong SSID, WPA3 if available) and guidance on optimizing signal coverage in a two-story apartment. Please bring any necessary cables and tools, and be comfortable troubleshooting connection issues. Preference for a tidy, non-disruptive setup with a quick explanation of how to use the network.