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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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Ninja Nerd
Embryology - Development of the Placenta
2 ratings

Comprehensive exploration of placental development, detailing formation processes and crucial metabolic and hormonal functions essential for fetal growth and maternal health.
- YouTube
- 1 hour 5 minutes
- Self-Paced
- Free Video
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2 ratings

Introduction to stick welding (SMAW): learn about its advantages, popular applications, and essential techniques for beginners. Ideal for farmers, hobbyists, and those new to welding.
- YouTube
- 24 minutes
- Self-Paced
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DroneBot Workshop
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2 ratings

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- YouTube
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The Organic Chemistry Tutor
Basic Electronics for Beginners
2 ratings

Explore fundamental electronics concepts, including circuits, Ohm's law, LEDs, resistors, and voltage dividers. Gain practical knowledge for beginners in electrical engineering.
- YouTube
- 30 minutes
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- Free Video
Kurzgesagt – In a Nutshell
The Ocean Sunfish - The Dumbest Animal Alive
2 ratings

Discover how the ocean sunfish, evolution's strangest joke, thrives despite being a massive, derpy giant that drifts aimlessly and carries parasites in the world's oceans.
- YouTube
- 11 minutes
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- Free Video
Sustainability of Social-Ecological Systems: the Nexus between Water, Energy and Food
1 rating

Explore complex social-ecological systems through the water-energy-food nexus. Learn to analyze sustainability using innovative methods, challenging conventional narratives and developing critical thinking skills.
- Coursera
- 23 hours 4 minutes
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NPTEL; IIT Kharagpur
Applied Thermodynamics for Marine Systems
2 ratings

Comprehensive exploration of thermodynamic principles and applications in marine systems, covering laws, cycles, turbines, refrigeration, psychrometrics, and heat transfer.
- YouTube
- 1 day
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NPTEL; IIT Kharagpur
Basic Thermodynamics
2 ratings

Comprehensive exploration of thermodynamic principles, from fundamental laws to advanced concepts, covering energy systems, property relations, power cycles, and multi-component systems.
- YouTube
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In 46 episodes, Dr. Shini Somara will help you find your place in the world -- literally! -- with physics. This course is based on introductory college-level material and the 2016 AP Physics I and II curriculum.
- YouTube
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Sensory Systems
2 ratings

This course examines the neural bases of sensory perception. The focus is on physiological and anatomical studies of the mammalian nervous system as well as behavioral studies of animals and humans.
- MIT OpenCourseWare
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Classical Mechanics
2 ratings

In this course, we will investigate: Force and conservation laws.
- MIT OpenCourseWare
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Real Engineering
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2 ratings

Explore the engineering behind fighter planes' ability to withstand high G-forces, from aircraft design to pilot training techniques, in this informative video.
- YouTube
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Weld.com
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2 ratings

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- YouTube
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2 ratings

Master essential discrete mathematics concepts including combinatorics, probability, recurrence relations, generating functions, and graph theory through comprehensive examples.
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