After downloading the browser, enabling VPN is easy. Go to “Settings” (or “Preferences” on Mac), choose “Privacy & Security” and then toggle the free VPN. An icon labeled “VPN” will appear in the browser, from which you can toggle VPN on and off, and choose a location.
Windows 7 Pro SP1 (64-bit), avast! v17 Free, MBAM3 Pro, Windows Firewall, OpenDNS Family Shield, SpywareBlaster, MVPS HOSTS file, MBAE Premium, MCShield, WinPatrol PLUS, SAS (on-demand scanner), Zemana AntiLogger Free, IE11 & Firefox (both using WOT [IE set to WARN, FF set to BLOCK]), uBlock Origin, CryptoPrevent.
[I believe computer-users who sandbox (Sandboxie) are acting prudently.]