The TOEFL is administered in both paper and electronic formats. Be aware of which version you are taking before you go to the exam. The exam has four different sections, and the test from start to finish lasts four hours. The exam tests reading, listening, speaking and writing. If you are taking the electronic version, get comfortable writing essays by looking at sample essay questions common for exams. The paper version does not require an essay.
Know academic English, which is the type of English used in universities and colleges. Don't focus on the professional English that you may read on resumes but instead focus on college textbooks, journals and research articles. You might want to borrow books from a friend who attends college.You can also learn from watching common television shows or movies in English.
While practice tests and books can aid you, nothing is better than someone who speaks the native language. A mentor will be able to answer any questions that the book doesn't. She may also be able to quiz you verbally, which is something you will need to know to pass the TOEFL. She could read you a passage from a practice test and ask you questions, which you must answer verbally. You can also practice speaking to her, and she can give you tips on improving your speaking.
Since the TOEFL lasts for four hours, be prepared to sit and take the exam for that time period. Pace yourself with your study sessions by starting off at shorter sessions and eventually building your way up until you can sit for four hours at once.