What is a VPS?
Source: Wikipedia.com
In short, it's a distant windows or linux or MacOSX hosted on your provider server
A virtual private server (VPS) is a virtual machine sold as a service by an Internet hosting service. The virtual dedicated server (VDS) also has a similar meaning.
A VPS runs its own copy of an operating system (OS), and customers may have superuser-level access to that operating system instance, so they can install almost any software that runs on that OS. For many purposes they are functionally equivalent to a dedicated physical server, and being software-defined, are able to be much more easily created and configured. They are priced much lower than an equivalent physical server. However, as they share the underlying physical hardware with other VPSes, performance may be lower, depending on the workload of any other executing virtual machines
How can you access it?
Windows
With Windows for instance it's very easy.
All Windows (and Linux and MacOS) operating systems have a Remote Desktop Connection built-in utility.
Linux and MacOS
Credentials
Credentials (IP address and login and password) are usually sent by emails after subscribing to your VPS (or VDS) private server
What to do when connected?
Install Google Chrome or Opera
Connect to your TradingView account
Install your third-party plugin (TradingConnector, ProfitView, 3commas, ...)
And always let only 1 chrome tab opened so that the server-side alerts will get forwarded to your broker
