icrosoft White Papers:
https://msdn.microsoft.com/en-us/library/ee410014(v=sql.105).aspx

Microsoft Books Online:
https://technet.microsoft.com/en-us/library/ms130214(v=sql.105).aspx

Pragmatic Works Training Resources:
http://pragmaticworks.com/Training/Resources

SQL Server Database Engine Permission Posters:
http://social.technet.microsoft.com/wiki/contents/articles/11842.sql-server-database-engine-permission-posters.aspx

TechFunda SQL Server Tutorials:
http://techfunda.com/howto/sql-server

Microsoft SQL Server Tutorials:
https://msdn.microsoft.com/en-us/library/ms167593

Microsoft SQL Server Community Projects & Samples:
http://sqlserversamples.codeplex.com/

SQL Pass DBA Fundamentals – Web Presentation Archives
http://fundamentals.sqlpass.org/MeetingArchive.aspx

Blogs and Other Great Resources:
https://blogs.msdn.microsoft.com/sql_server_team/ – MSSQL Tiger Team
https://www.mssqltips.com/
http://blog.sqlauthority.com/
http://www.brentozar.com/
http://www.edwinmsarmiento.com/
http://kevinsgoff.net/
https://www.sqlskills.com/
http://blog.datainspirations.com/ – BI blog by Stacia

A better list put together by New Horizons:
http://nhlearningsolutions.com/Blog/TabId/145/ArtMID/16483/ArticleID/1186/Free-Resources-for-SQL-Server.aspx

SQL Injections:
http://www.unixwiz.net/techtips/sql-injection.html