Free online tutorials at 1Keydata

1Keydata.com offers free online programming tutorials and information on data warehousing. Please visit the following sites:

SQL Tutorial: This tutorial teaches beginners the basic building blocks of SQL.
Data Warehousing and Business Intelligence: Information on business intelligence tools and the steps needed for a successful data warehousing project.

HTML Codes Tutorial: An HTML tutorial site aimed to teach beginners the building blocks of HTML through examples.
CSS Tutorial: Aims to help beginners learn the basic concepts in CSS.
PHP Tutorial: Aims to help beginners learn the essential building blocks of PHP.