I highly recommend Understanding SQL. I bought it while i was attending a college database course and i found it to be a refreshingly "down to earth" book. Create the database tables, work through the examples and you should be up and running fairly quickly. I still keep this book next to my work computer as a quick reference "by example" book. It is, however, out of print, but there are still used copies around for pretty cheeep.

L-LL-L--L-LL-L--L-LL-L--
-R--R-RR-R--R-RR-R--R-RR
B--B--B--B--B--B--B--B--
H---H---H---H---H---H---
(the triplet paradiddle with high-hat)