VNC is a desktop sharing system that will allow you to connect to a Linux desktop from your home PC, for easy remote management of your VPS. This walkthrough will guide you through the installation of a VNC server on Debian.
In the course of monitoring your VPS, one of the first things you will want to check is RAM (memory usage). Linux includes a few easy-to-use tools, including free and ps, described here:
To check the CPU allocation and information on your VPS, simply log in to SSH as root, and run the following command: