How do I connect Wi-Fi near me?

Excuse me, could you possibly provide some guidance on how one might go about connecting to a Wi-Fi network that's nearby? I'm having a bit of trouble figuring out the steps I need to take to make that happen. Perhaps there's a specific setting or menu on my device that I need to access? Or is there a code or password that I'm missing? Any assistance you could offer would be greatly appreciated. Thank you for your time.