How to find a nearby Wi-Fi network?

Hello there, I'm having a bit of trouble connecting to the internet and I'm wondering if you could assist me in finding a nearby Wi-Fi network. Could you please walk me through the steps to locate one? I'm not very tech-savvy, so simple explanations would be greatly appreciated. Additionally, is there a way to determine if the networks are secure before connecting to them? Thank you in advance for your help.