Called the Firefox Private Network, the service promises Firefox users a more secure, encrypted path to the web that prevents eavesdroppers from spying on their browsing activity and hides their location from websites and ad trackers.
In this respect, it does not want to protect your web browser, but it's a good option if you want to use an encrypted connection on the fly when you're using a public Wi-Fi network , for example.
As a time-limited beta, the Firefox Private Network is currently free to try, although this may suggest a paid service in the future. So you need to be a resident logs into your Firefox account using Firefox desktop browser.
If you can not make any pre-requisites, you can install the private network by navigating to this page + Add to Firefox button, then granting permission for the network to be added to the browser.
Click the door hanger icon that appears at the top-right corner of the toolbar, and you'll see that you can toggle the VPN on and off. A green tick in the icon signifies the secure network is active and your browsing activity is being encrypted.
Opera browser offers a similar service to your web browsing browser, but with the added benefit that you choose the continent that you want your connection to reside. So if you're looking for a location-restricted service (Netflix, say) from abroad, you might have better luck using it instead.