This document provides an introduction to open science and discusses why it is important, how it can be practiced, and some of the tools that enable it. Open science refers to making scientific research and data accessible to all levels of an informed public. It can help make research more effective and transparent by allowing ideas and findings to be more openly communicated and built upon through tools like blogs, wikis and collaborative documents. While technology has enabled many open science practices, challenges remain regarding standards, data portability, and cultural adoption.