Books Online is the primary documentation for SQL Server 2008 and includes the following types of information:
- Setup and upgrade instructions.
- Information about new features and backward compatibility.
- Conceptual descriptions of the technologies and features in SQL Server 2008.
- Procedural topics describing how to use the various features in SQL Server 2008.
- Tutorials that guide you through common tasks.
- Reference documentation for the graphical tools, command prompt utilities, programming languages, and application programming interfaces (APIs) that are supported by SQL Server 2008.
- Descriptions of the sample databases and applications that are available with SQL Server 2008. You can download the sample databases from the SQL Server Community Projects and Samples page on CodePlex.