The TDC study materials were excellent. The day of the test I felt prepared and after taking the test I felt confident because all the topics were covered in the study materials. In addition, I love all the additional study tips such as exercising multiple times a week, snacks etc. The day of the test this helped ease my anxiety. The morning of my test I ran a few miles, had a good light snack and was mentally ready since this is what I have been doing for the last two months with the guidance of TDC. I would highly recommend the material. In addition, Robin was very helpful by responding to my emails quickly and providing me the explanation I needed in order to understand the reasoning for a particular answer. Thank you again TDC!