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A Simplilearn Certificate Goes on LinkedIn Each Minute; Here’s How Krishna Kumar Built It From a Blog

17 years ago, Krishna Kumar started offering free PMP prep online. Today, it’s a leading digital upskilling platform that helps millions upskill in AI, cybersecurity, data science, and more.

Class Central Team Jun 22, 2026

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Kurzgesagt – In a Nutshell
You're More Stressed Than Ever - Let's Change That

Understand the biology of stress, how it evolved from survival tool to modern health threat, and discover science-based strategies to manage it effectively for better well-being.
- YouTube
- 12 minutes
- Self-Paced
- Free Video
Johari MBBS
Enzyme and Mineral Metabolism Biochemistry

Master enzyme classification, inhibition mechanisms, and essential mineral metabolism including iron, calcium, zinc, and magnesium for comprehensive biochemistry understanding.
- YouTube
- 2 hours 56 minutes
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- Free Video
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Blood Physiology - Complete Guide to Hematology and Immune System

Dive into comprehensive blood physiology covering composition, coagulation, immunity, blood groups, and transfusion reactions in this detailed medical study guide.
- YouTube
- 4 hours 19 minutes
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- Free Video
Lecturio Medical
Anatomy of the Heart - USMLE Prep Videos

Master cardiac anatomy and physiology with detailed coverage of heart chambers, valves, electrical conduction, and blood vessels for USMLE preparation.
- YouTube
- 1 hour 24 minutes
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- Free Video
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Psychiatry - USMLE Prep Videos

Master psychiatric assessment, disorders, and treatment approaches for USMLE success with comprehensive coverage of schizophrenia, substance abuse, and forensic psychiatry concepts.
- YouTube
- 3 hours 30 minutes
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- Free Video
Lecturio Medical
Pharmacology - USMLE Prep Videos

Master drug mechanisms, kinetics, and therapeutic applications across major medication classes for USMLE preparation and clinical practice.
- YouTube
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Pathology - USMLE Prep Videos

Master pathophysiology and disease progression across all organ systems through comprehensive anatomic pathology training designed for USMLE preparation and clinical practice.
- YouTube
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Respiratory Medicine - Complete Course

Master respiratory medicine fundamentals covering pneumonia, COPD, asthma, lung cancer, and pulmonary physiology through comprehensive video lectures and interactive content.
- YouTube
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Level Up RN
Pharmacology Mastery - Conquer ATI Comprehensive Requirements with Ultimate Video Playlist

Master pharmacology fundamentals and ATI exam strategies through comprehensive medication coverage across all body systems, from cardiovascular to nervous system drugs.
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Master nursing pharmacology fundamentals and medication administration to excel on your ATI proctored exam with comprehensive system-based drug coverage and safety protocols.
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How to Pass ATI Proctored Exam - EKG Interpretation - Everything You Need to Know

Master EKG interpretation fundamentals for ATI proctored exams with comprehensive coverage of heart rhythms, conduction systems, and abnormalities in streamlined format.
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