What is a one-sentence summary of the following article?
VPNs route your browser traffic through a server other than your local one, which makes it impossible for your Internet Service Provider (ISP) to see your browsing history. Things to look for in a VPN include the following:   On an HTTPS site - Never download browser security software from a site whose URL doesn't begin in "https"; unencrypted (non-HTTPS) sites make it easy for other people to steal your information.  Based outside of the United States - VPN servers based outside of the United States aren't subject to US guidelines, meaning they can't be forced to expose users in the event of an investigation.  Multiple-device support - Protecting your computer won't do anything for your mobile phone or tablet. Find a VPN that has an iOS and/or Android extension as well to stay protected across all of your devices. Keep in mind that, when it comes to sponsored content, you may not get an honest review for a paid spot in a list. Some things you might compare are ratings across multiple sites, performance, overall security, and price.  You can find trustworthy VPN comparisons on https://thatoneprivacysite.net/simple-vpn-comparison-chart/ and on https://privacytoolsio.github.io/privacytools.io/#vpn/. For specific VPNs, try AirVPN (https://airvpn.org/) and BlackVPN (https://www.blackvpn.com/). Some sites, such as CNET, will provide download mirrors for sponsored or preferred software. Unless there is no other place to download the VPN and you're positive of the download link's validity, refrain from downloading your VPN from anywhere but the official site.  Again, if the site isn't HTTPS-encrypted, don't download a VPN from it. Most VPNs are paid options, so you'll likely need to pay before downloading. Consider using PayPal to pay instead of a credit or debit card. Some VPNs simply interface with your preferred browser, while others necessitate installing the program to your computer and activating it before browsing. VPNs don't automatically make all of your browsing private, since non-HTTPS sites can still pull information from your browser and publicly display it. To get the most out of your VPN, stick to well-encrypted sites and refrain from giving out your information. Half of the privacy battle comes from choosing to stay anonymous while using encrypted services. If you enter your email address, use Facebook "Like" buttons on other sites, or perform other identifying actions, your VPN won't necessarily prevent that information from being viewed by other people.

Summary:
Search for a VPN online. Compare your options. Download your selected VPN from its official site. Install your VPN if needed. Use your VPN in conjunction with HTTPS sites.