(Image from proprivacy.com)
In other words, whether your reason for using a VPN is online privacy or access to region-locked content, you won’t get in trouble with Netflix, although the content may not load. An exception to this is if you live in a country where using a VPN itself is illegal.
If Netflix is blocked for you at work or school, a VPN would allow you to bypass that. Of course, you should do this at your own discretion. But if you just can't wait to find out what happens in that new episode, a VPN is a very helpful tool to access Netflix (or for that matter, other sites that may have been blocked).
Using a VPN for Netflix also allows you to access any movies or shows that might not be available in your country’s content library. Because of different content licensing partnerships and restrictions that Netflix has with different parties in countries around the world, the content library of movies and shows on Netflix can vary across different countries. In other words, if you’re trying to access Netflix while traveling or if you’re trying to access content that is not available in your home country, you may find that you aren’t able to find a certain movie or show. Netflix restricts your access to your home country’s content library based on the geographic location of your IP address. Because a VPN allows you to access Netflix from a different IP address, a VPN is useful if you want to access Netflix’s content library in a different country.
Also, if you care about your online privacy (here’s why you should) while using Netflix, a VPN would also allow you to protect your online identity while you browse Netflix or other sites on the Internet.
Since you'll be streaming content from Netflix, you'll want to find a VPN that doesn't throttle your Internet speed or bandwidth, so that it doesn't affect your streaming experience. Some free VPN options out there come with the hidden cost of slowing down your Internet, which can make watching shows and movies very laggy.
FreePN is a safe and free VPN that I'd recommend -- it's open source and completely free to use. You can check it out for yourself and learn more, but the TL;DR is that FreePN was created to protect your online privacy, and you can use it to bypass blocks on Netflix and access geo-restricted content without worrying about bandwidth throttling.