DataWarehousingGuide.com

There are plenty of books available in the market which explain data warehousing in detail. But, Bill Inmon and Ralph Kimbell are two big names on the subject of data warehousing and business intelligence. It is always a good starting point to refer the books from these two authors. Well known books from them are:

Books by Ralph Kimbell:
Data Warehouse Lifecycle Toolkit
Data Warehouse Toolkit published by Wiley and Sons
# He writes the "Data Warehouse Designer" column for Intelligent Enterprise magazine

Books by Bill Inmon:
Building the Data Warehouse - by W. H. Inmon
Exploration Warehousing: Turning Business Information into Business Opportunity - by William H. Inmon, R. H. Terdeman, and Claudia Imhoff