This document is an administrator's guide for Liferay Portal. It provides information to help with initial setup and installation, configuration, using Liferay's collaboration features, advanced configuration, maintenance, and upgrading Liferay Portal. The guide discusses obtaining and installing Liferay bundles or for an enterprise, configuring users, organizations, communities, and permissions. It also covers clustering, caching, workflow, customizing, monitoring, backups, logging, and upgrading Liferay.