Outstanding SQL Server Blog: Paul Randal
Since he has left the SQL Server group at Microsoft and joined his wife Kim Tripp at SQL Skills, Paul Randal has been becoming even more prolific with his blog posts. If you really want to learn a lot about how things like DBCC CHECKDB, DBCC IND, DBCC PAGE and SQL Server indexing, etc. really work, make sure you are subscribed to his blog. The content lately has been outstanding. Paul's blog is here:
http://www.sqlskills.com/blogs/paul/