I followed the program exactly as TDC advised, opting to go through the material twice as suggested for those who have time. I spent two months studying TDC material, which felt like the right amount of time to absorb the information, and was fortunate to pass the exam on the first attempt. The TDC program helped me practice timing myself so that I was able to finish the exam on time, which was my main concern. The material was as clearly presented as any test-taking program I have ever taken. I strongly recommend the program, and wish you good luck!