There is a range of resources to help you prepare for IELTS:

After you register, you will be given access to the new online self-preparation service offered by the British Council called Road to IELTS.

You can also purchase the IELTS Specimen Materials pack. It consists of one complete practice test plus audio CD.The pack is suitable for both Academic and General Training Modules. It can be bought from us directly at the price of BGN 40.00 or can be ordered by post, at the price of BGN 50.00 (delivery cost included). Please download the order form here. Important! Please note that we do not have the IELTS Specimen Materials in stock at the moment. We will be able to accept your order for this pack after the beginning of March 2012.

You can attend our IELTS briefing session, briefing candidates on exam procedures every Tuesday before the test day at British Council Sofia from 18:00 to 18:30.

There are a lot more useful preparation resources which you can access here. They include:
Free online practice tests
British Council online resources
IELTS preparation materials
Test day advice

You can also enrol for a British Council IELTS preparation course.