I've used Hamachi for around 8 years for torrents etc. It comes in English and is not difficult at all. Instructions and details on setting it up with Provoxy (also free) are a google search away. 5 is the PC limit per "network". While I only have a few PC's and some redundant I have 3 networks on a single account so I could actually have 15 PC's total. It's free,they provide you with what you need and if I ever have an issue I search online for the answer. They are hard at work over there. I appreciate the free service without ever nagging me to buy anything. No need to bother them! Once in a while my PC will get some corruption (prob win updates) and things don't work right. I simply delete both and reinstall. With Hamachi you have the choice to save your settings as well. Works as-is or well instructed options available for port forwarding,local network options,tor etc etc. With Privoxy you just put the Hamachi listening port in the main config and it's done. So, a free quality VPN setup or go pay for one!
When I loaded Hamachi everything was in Japanese, which I couldn't read. I searched online to find solutions on how to change my language and there was no support available. I redownloaded Hamachi, and when I tried turning it on it wouldn't load anyways. 0/10, wasted an entire day trying to get it to work.