First, let's check which free VPN server we can get on Mac:
How to use free VPN Client for Mac
The key point that I choose FlyVPN as the best trial VPN for Mac is for its smart Mac VPN Client. Setting FlyVPN Client up on Mac is incredibly simple. You download the app and then use the free VPN accounts to connect to the server you need.
Step 1 - Free download Mac VPN Client. Drag the Client to your Applications folder.
Step 2 - Login with free VPN accounts(two options). You can check the trial VPN account and password at https://www.flyvpn.com/freetrial. Or register a FlyVPN account, which is will show expired, but available to use without paying.
Step 3 - Custom VPN routes to surf via VPN or not via VPN.
Use VPN for all access, excluding...: You can route specific region not surf via VPN. Or select "none" to make all traffic to surf via VPN.
Use VPN when accessing....: You can specific traffic into specific region to surf via VPN. Or select "all" to make all traffic to surf via VPN.
If you just want to surf US websites via VPN, you can select "Use VPN when accessing...", then pick the region as United States.
Step 4 - Tap VPN region and click one server including. The response time will appear after connecting the VPN servers.
Step 5 - Tap Connect button to connect. You are now connected on VPN with the Mac VPN client.
How to setup VPN on Mac manually
Apple has great support for VPN built right into Mac OS X and iOS. If you don't want use VPN Client on Mac, refer to this tutorial about how to get a free VPN trial manually on Mac. Ahead to setup PPTP, L2TP/IPSec VPN on Mac OS X now.
Step 1 - Tap System Preference - Network - + - VPN...
Step 2 - Choose PPTP or L2TP/IPSec.
Step 3 - Input some required info, such as VPN account, and VPN server address. Remember to use the free trial VPN account and server address. We have mentioned the solution to get those info above, please double check.
For the detailed tutorial, refer to How to configure PPTP VPN on Mac OS X or How to configure L2TP IPSec VPN on Mac OS X.