That's a pretty big target! A scatter gun wouldn't be a start, it would take artillary to cover something that big!
If you are looking at SQL in general, I'd recommend looking at
Joe Celko, or from a more academic point of view, Chris Date.
If you are looking for specific products or topics, I can offer more suggestions, but there is WAY too much depth to try to do that without some limits!
-PatP