Learning SQL - gotta start somewhere! W3Schools has a great basic tutorial.

W3sql

W3Schools.com has taught me the rudimentaries of many different languages and technologies. Here's how they describe their "up and running" online tutorial for SQL:

"SQL is a standard language for accessing databases.

Our SQL tutorial will teach you how to use SQL to access and manipulate data in:

MySQL, SQL Server, Access, Oracle, Sybase, DB2, and other database systems."