Okay, thanks. How do I make this hair pulling out story short?
I had to reset my wifi password, so everything was disconnected. I tried to reconnect my 2 windows 10 laptops at the same time, and that's where the confusion started (I shouldn't have tried to multitask!)
On the one laptop I had the windows firewall, and just was using avast for antivirus. When I reconnected, avast popped up and asked if this network was untrusted/home/etc and I selected home, and that was it.
On the other laptop I had Avast firewall (unbeknownst to me) and avast antivirus. When I reconnected, avast popped up and asked if this network was untrusted/home/etc and I clicked home, then something else popped up (I'm not sure what) that asked if the network was trusted or untrusted again, and said that if it is trusted my device would be visible to the public or something like that. I didn't think that sounded good, so I clicked untrusted. Then when I thought it all through and wanted to go back and see the settings, I wasn't sure where all I'd been. I remember some Avast firewall thing coming up, and I didn't think I had Avast firewall, so I opened the Windows security settings on both laptops, discovered one has windows firewall and the other has avast, one calls my network public and the other private, and I am all confused.
I want my network to be safe from weirdos driving by who might want to try to connect, and I don't want my information to be any more visible than it needs to be to other people. But, I obviously need my network to work, need my computer to be able to find my printer, etc.
I'm so confused at this point I'm not sure what to ask. I'll try this:
Is it better for my computers to think my network is private or public? Trusted or untrusted?
When I put in the IP address in a search window to see my router settings, I see that remote access is off. Is this all that is needed to stop strangers from getting on my wifi?