In Episode 5 of The TOEFL Podcast, Paul Austin of TOEFL Speaking Teacher talks about how you should prepare for the TOEFL and what resources you should use. He explains when you should just study on your own, when you should use premium resources, when you should register for group lessons or take private lessons.
The first option is self-studying on your own using free resources online. For many students, it's not enough. The second option that you have is to purchase premium self-study resources. The third option is to take group lessons, and these are often a pretty good choice, as taking lessons in the group environment will help you get well-prepared to take the TOEFL test.
The fourth option is private lessons, which are often a little bit more expensive, but the most effective.
Paul explains about some of the factors that can determine what you should do. First of all is your previous English experience. Other factors can be the score you want, how you handle stress in the test environment, how much time you have to prepare for the TOEFL and how much money you can invest in your preparation.
You need to pick up a professional service that helps you prepare for the TOEFL as soon as possible. Knowing your options and understanding those options can help you make the best decision possible. The TOEFL Speaking Response Analysis can help you know exactly what´s preventing you from getting a high score.