Most countries now offer the Internet-Based TOEFL (iBT). A few offer only paper-based testing (PBT). Make sure you figure out which test you'll be taking before you start studying for the TOEFL test. You cannot choose to take the written test if your country offers the iBT. One reason people experience test stress is because they don't know what to expect before a test. Prevent stress on test day by studying the test format in detail.