If you’ve read my other entry about reading (What to expect and Time Management), then you might want to do some practice reading. Here are some links to a few different kinds of question. Also, at the bottom of the page, you will find some documents you can download.
http://www.examenglish.com/IELTS/cbIELTS_reading.htm (A computer based test)
https://www.teachers.cambridgeesol.org/ts/exams/academicandprofessional/ielts/academicreading (The links at the bottom are to different kinds of question)
http://www.britishcouncil.org/professionals-exams-ielts-reading-exam-home.htm (The links on the bottom left are all practice papers)