This book is out of print but it's very easy to find a copydynamite:
It starts from zero knowledge of Statistics but it doesn't insult the reader's intelligence. It's incredibly practical but with no loss of rigour; in fact, it underscores the danger of ignoring underlying assumptions (which are often false in real life) of common tests.
It's out of print but it's very easy to find a copy. Follow the link for a few options.