Turn it on, select VPN type, and enter required data. I occasionally use it via the IPSec protocol to connect to work.
I've been experimenting with Cloak, and have been happy with it. The company is offering a free 30-day trial.
I've been trying out the F-Secure Freedome VPN. I have been a long time user of the Windows security products.
https://itunes.apple.com/us/app/f-secure-freedome-vpn/id771791010?mt=8&at=10l3Vy
Is it good to use free VPN apps such as Cyberghost or Hotspot?
ZenMate