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

Hi there, I’m looking for assistance installing a new internet box and getting the router set up from scratch. I have the box provided by my ISP, and I’d like someone to connect it to the modem, configure the Wi-Fi network, set up a secure password, enable guest network, and ensure all devices like phones, laptops, and streaming devices connect reliably. If possible, please also help with basic browser-based troubleshooting and explain any steps in simple terms. I’d prefer a tidy, smoke-free environment and to minimize wireless interference by recommending optimal router placement. Availability during the morning works best for me.