This document provides instructions for building and installing the Ring programming language on different platforms like Ubuntu Linux, MacOS X, and using CMake. It explains how to get the Ring source code from GitHub, install necessary libraries, build the Ring compiler and virtual machine, and generate and build code for Ring extensions like RingAllegro, RingLibCurl, and RingQt. It also describes how contributors can help with documentation, testing, samples, applications, editor support, libraries, extensions, and the compiler itself.