The "Heinemann TOEFL Preparation Course" is a classic resource originally developed for the TOEFL PBT (Paper-Based Test)
If you get your hands on the Heinemann book (PDF or physical) and the free audio repack, do not just listen passively. Use this protocol: the heinemann toefl preparation course audio free repack
Features of the Heinemann TOEFL Preparation Course Audio Free Repack: The "Heinemann TOEFL Preparation Course" is a classic
Practice Tests: Two full practice exams to simulate the testing environment. the heinemann toefl preparation course audio free repack
Internet Archive: You can borrow the 1996 edition for free via the Internet Archive, which includes a digital copy of the preparation course.