Here you can find the great amount of useful literature about
Microsoft SQL Server (available online).
http://www.itknowledge.com/reference/dir.databases.html
http://gshulkin.hypermart.net/books/DatabaseBook.html
Microsoft SQL Server site
http://www.microsoft.com/sql/
Microsoft seminars
http://www.microsoft.com/seminar/1033/Index/BrowseTitle.htm
Microsoft Personal Support Page for SQL Server
http://support.microsoft.com/support/SQL
MSDN Developer Center for SQL Server
http://msdn.microsoft.com/sqlserver/
Microsoft TechNet
http://www.microsoft.com/technet/sql/
Microsoft TerraServer
http://terraserver.microsoft.com/default.asp
Many interesting articles available online, SQL scripts, FAQ, etc.
http://www.swynk.com
SQL Server Magazine (many interesting articles available online)
http://www.sqlmag.com
Pinnacle Publishing (many articles available online, job forums,
etc.)
http://www.pinpub.com
Articles, tips, books, user groups
http://www.sqlservercentral.com
WorldWide SQL Server User’s Group
http://www.sswug.org
SQL Server News
http://www.sqlwire.com
Michael R. Hotek’s site contains technical articles, T-SQL scripts,
collection of SQL Server books and product reviews
http://www.mssqlserver.com
Code samples, downloads
http://www.dbmaint.com
Downloads, FAQ, discussions
http://www.sqlsecurity.com/
There are FAQs
http://www.mssqlserver.com/faq
http://www.ntfaq.com/Articles/Index.cfm?DepartmentID=800
http://www.swynk.com/faq/sql/sqlserverfaq.asp
http://www.sql-server.co.uk
Transaction Processing Performance Council
http://www.tpc.org
experts-exchange (ask a question about SQL Server, and many experts
will provide an answer)
http://www.experts-exchange.com/Computers/Databases/SQL
Site about SQL Server performance and optimization
http://www.sql-server-performance.com/