With a 50-hour exam-prep course and 30 hours of study, I passed the exam of PMI Risk Management Professional.
The primary materials:
- PMI-RMP Certification ExamPrep Course from Advanced Business Consulting Inc.
- Practice Standard for Project Risk Management
- PMBOK Guide – Fifth Edition
- PMBOK Guide – Sixth Edition
- PMI-RMP Exam Prep Study Guide by Belinda Fremouw
And the following materials from Dr. David Hillson
- PMI conference paper
- YouTube RiskDoctorVideo Channel
- The Risk Management Handbook: A Practical Guide to Managing the Multiple Dimensions of Risk (ISBN-10: 0749478829)