Firstly, I would like to thanks Dr. Rigas for all of his kind support me not only during I joined the PMP Exam Preparation Boot camp with him in Nov 2017, but also after the class too. He gave me many useful advice and suggestion on my questions when I did practice questions. He is very good lecturer. Furthermore, the study material provide the good details for exam preparation. I do suggest anyone who needs to pass the exam to join his class.