Steven Hawson 
The Complete Idiot »s Guide to Intermediate Spanish, 2nd Edition 
Take Your Spanish Skills to the Next Level

Improve your Spanish.
This revised edition offers expanded coverage of grammar and vocabulary, as well as idiomatic usage, irregular verbs, and conversational elements that will help readers improve their language skills in a variety of situations. In addition, a new workbook section specially designed to help readers practice and retain information has been included.
-Includes a comprehensive review of beginning Spanish, plus simple strategies for memorizing cases, endings, and vocabulary
-Features an easy-to-understand guide to Spanish idioms
-Covers business and medical Spanish
-Techniques for mastering vocabulary and grammar
-New exercises and answers throughout