VPN guides
One question per page, answered on the first screen. The official method comes first; a VPN only where it genuinely changes the outcome.

How-To
How to Change Country on Google Play
Google Play changes country from Settings, then Country and profiles, but only while you are in the new country with a payment method from it, and at most once every 90 days. Your balance stays behind and Play Points are lost.

How-To
How to Change Location on Facebook Marketplace
Marketplace shows listings around a browse location you set by hand, separate from your profile. It cannot be moved to another country, and a VPN changes only the IP address Meta reads.

Privacy Explained
What Can Someone Do With Your IP Address?
Someone with your IP address can look up your city and internet provider and, at worst, knock your connection offline, usually for minutes. Your name, street address and files are not in it.

Privacy Explained
Static vs Dynamic IP Address: What's the Difference?
A static IP stays fixed; a dynamic IP is leased and renewed through DHCP. Your connection has several addresses, each with its own answer, and the one that decides port forwarding may be carrier-grade NAT, not static vs dynamic.

Privacy Explained
Can the Wi-Fi Owner See What Sites You Visit?
The Wi-Fi owner can see which sites you visit, not which pages or what you type. Three messages leak the site name before HTTPS starts; here is what closes each one, and what a VPN cannot hide.