I purchased Grossman testing materials/practice exams and felt overwhelmed with the information given. Plus it didn't help that I was scoring 70% or lower on their practice exams. I talked to a friend who was recently licensed and she suggested TDC. The first practice test I scored a 77% and after going through the step by step testing material provided I felt very confident. It was the confidence booster I needed. I didn't realize I really needed someone to set a planned schedule for studying until I got the one Amanda sets out for us. I studied during anytime off I had (after work and 6 hrs a day on the weekends) for two weeks and passed the L&E.