A couple of colleagues have expressed an interest in learning SQL recently.
Whilst I am helping with specific queries and the basics on many concepts, here are the starting blocks of self help, the email I send on SQL Resources.
SQL Server has a large following. There are lots of great free resources and tools.
The number one site to sign up to is >
It has newsletters, forums etc, I have been a member for years.
Redgate also does another community site with some great articles.
Without getting too deep (yet), these are the main folk to follow.
(Sign up to their newsletters / RSS)
Brent Ozar - http://www.brentozar.com/blog/
John Sansom - http://www.johnsansom.com/
SQL Skills - http://www.sqlskills.com/
Twitter is a good place to ask for help too using the hashtag #sqlhelp