I also read articles from http://www.sqlservercentral.com/[^] and they have a good Question of the Day feature that gets emailed to you daily so that you can test your knowledge etc.
Lobster Thermidor aux crevettes with a Mornay sauce, served in a Provençale manner with shallots and aubergines, garnished with truffle pate, brandy and a fried egg on top and Spam - Monty Python Spam Sketch
You need to decide what start with. Do you want a general overview? To learn to code (T-SQL)? To learn how to be a DBA? Do you want a certificate?
I would go to a bookstore with a good computer section and look at the SQL books. As an example, have a question in mind, say for T-SQL, lookup data types. If you can understand what they say, that book would be high on the possible list.