Practice for the International English Language Testing System, or IELTS, with online preparation resources and test samples. You can do the sample tests online under timed conditions or download the materials from various websites to practice offline.
The joint owners of the IELTS -- British Council, Cambridge English Language Assessment and IDP -- offer good sample tests that you can take online or download to your computer. You can use these practice tests to improve your language skills and study the test format. You should also do some tests under timed conditions to check your ability to finish the test on the actual exam date.
If you take the IELTS with British Council, its online preparation course provides good resources for practice. They are available online for free when you book your test. On the British Council's LearnEnglish website, you can also watch a series of videos designed to help you prepare for the IELTS speaking test.
Practicing general English skills is also useful in preparing for your test. You can find online practice activities on the websites of IELTS-supporting organizations. Practice listening skills with fragments of audio spoken by a native speaker. Use online word games or a thesaurus to increase your vocabulary, which is practically essential for getting a high score on all skills.