I took the GMAT three times over the course of a few years and TTP was finally the prep resource that clicked with me. The lessons are simple and easy to understand, and so much repetitive practice is baked into the lessons. The cadence of problem questions and reviews in the self-study plan made me confident that I fully understood the concepts I was learning. I thought the lessons were very strong in both Verbal and Quant. They have a few helpful tips for AWA section as well. Overall, I HIGHLY recommend TTP's materials and will be telling my friends to use them as well.