One of the most important things you can do to improve your IELTS score is to do lots of practice tests. To make your learning more effective follow these tips:
1. Do practice IELTS tests under exam conditions. This means you should give yourself the normal time limit and NOT use a dictionary.
2. Learn from your mistakes. If you make an error, check the correct answer and try to work out where you went wrong in your logic of answering the question.
3. If you really want to learn well, have a teacher review your errors and give you feedback on your answers and how to improve. I can provide this service to you for a modest fee.
Practice IELTS reading tests
Practice IELTS Listening tests
IELTS Speaking tests