Make sure you have your information ready for this tutorial it's another quickie!

 1.   Click Menu, go over to Preferences then Network Connections and Click.
Go to menu, preferences, network connections



 2.   Click add under Network Connections
Add Connection



 3.
  Select PPTP from the drop down box and Click "Create..."
Go to menu, preferences, network connections



 4.   Enter in server address under Gateway; enter in login information obtained from LiquidVPNs Client Area.  Also make sure that in the general tab you Enable for all users.
VPN Tab enter in server info and click advanced



 5.   In the Advanced Options we want to make sure ONLY these are checked. MSCHAP, MSCHAPv2, Point to Point(MPPE) Security 128bit, Allow Stateful and Send PPP Echo Packets then Click Ok, Click Save.
PPTP Advanced Options



 6.
 Click Menu ->Preferences ->Network 
Go to menu, preferences, network



 7.
  Click on your VPN and slide off over to on!
Turn on under Networking

Also Read

Installing and connecting to a OpenVPN server on Ubuntu 15.04
If you dont already have your files for your VPN downloaded and extracted I recommend getting...
Installing and Connecting to a PPTP VPN on Ubuntu(GUI)
Whoever said things werent easy in linux? In this guide I will be walking you through updating...
How to install and connect to an OpenVPN server on Linux Mint
The first thing we are going to want to do is get our OpenVPN Config files from the LiquidVPNs...