Barron's how to Prepare for the TOEFL IBT

Test of English as a Foreign Language Internet-based Test

Reviews the material covered in each section of the TOEFL, and provides seven full-length model tests.

Because you will not know which conversations and lectures will be graded, you
must try to do your best on all of them. You will hear each conversation or lecture
one time. You may take notes while you listen, but notes are not graded.