The short version
A VPN creates an encrypted connection between your device and a VPN server. Websites generally see the server’s public IP address. The service moves some visibility away from your local network and internet provider toward the VPN operator. It does not make you anonymous.
Follow one connection
Imagine opening an HTTPS website while connected to a VPN. The local network sees your connection to the VPN. The VPN routes traffic toward the website; HTTPS still protects the page content in transit. The website receives your request, and signing in tells it which account you use.
Know what stays visible
Cookies, account logins and browser fingerprinting can still link visits. A VPN does not repair a compromised device or prevent you from giving information to a phishing site. Provider privacy policies and independent audits deserve scrutiny; marketing promises are not guarantees.
Make a decision
Write down the specific connection problem you need to solve. Then evaluate the provider’s ownership, logging practices, security history and business model. For access to your own home network, investigate a remote-access setup instead of assuming a commercial browsing VPN is the right product.
Keep account protection, updates and backups on your list. Decide whether the VPN adds something useful to that foundation.
Your next step
On paper, finish this sentence: “I need to protect this connection from ___.” If you cannot identify the problem yet, start with the digital independence roadmap before buying another subscription.