Here are a few of my favourite resources! Make sure you invest in reputable IELTS coursebooks and don't waste your money.
Terry and Wilson, 2004, Focus on Academic Skills for IELTS, Pearson Education Limited. (later version 2010 http://www.pearson.com.au/9781408259016)
McCarter and Whitby, 2007, Improve your IELTS Writing Skills, Macmillan.
McCarter, 2008, Testbuilder 2, Macmillan.
all the testbuilder series for IELTS http://www.macmillanenglish.com/courses/testbuilders/
Various authors, Collins English for IELTS (Speaking, Writing, Listening, Reading, Grammar, Vocabulary) http://www.collins.co.uk/category/English+Language+Teaching/English+for+Exams/Collins+English+for+IELTS/#esp_pg=2
Hi! I've been a teacher for 23 years, and I really like helping students achieve their dreams..