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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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CrashCourse
Computer Science by CrashCourse
4 ratings

In 40 episodes, Carrie Anne Philbin teaches you computer science! This course is based on introductory college-level material as well as the AP Computer Science Principles guidelines.
- Independent
- 8 hours
- Self-Paced
- Free Video
Open Data Science
Impact of Data Science on Social Media Data - Jyotika Singh
4 ratings

Explore how data science transforms social media data, revealing insights to optimize profits for high-revenue properties. Learn about AI model building, applications, failures, bias, and solutions.
- YouTube
- 40 minutes
- Self-Paced
- Free Video
Labroots
Cannabis Laws, Science, and Politics
4 ratings

Explore the interdisciplinary landscape of cannabis laws, standards, and politics globally. Gain insights into medical and recreational use, federal regulations, and public health impacts.
- YouTube
- 27 minutes
- Self-Paced
- Free Video
Kurzgesagt – In a Nutshell
The Science Behind Cannabis: Effects, Addiction, and Brain Impact
4 ratings

Explore the latest research on cannabis, examining its increasing potency, potential addiction risks, and neurological effects while providing an evidence-based perspective on its legalization and health impacts.
- YouTube
- 15 minutes
- Self-Paced
- Free Video
Harvard CS50 2026 - Introduction to Computer Science
4 ratings

Master computer science fundamentals through Harvard's renowned CS50 program, covering programming languages, algorithms, data structures, web development, and AI concepts.
- freeCodeCamp
- 29 minutes
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The Center for Medical Education
Orthopedic & Sports Medicine - The National Family Medicine Board Review Course
4 ratings

Comprehensive review of orthopedic and sports medicine topics for family medicine board exams, covering athlete evaluations, common conditions, imaging techniques, and management strategies.
- YouTube
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- Free Video
Earth and Space Sciences X
Environmental Science - Biotechnology and Genetic Modification of Food
4 ratings

Explore biotechnology's impact on ecosystems and GMOs, examining genetic engineering, its applications, and the ongoing public debate surrounding genetically modified foods.
- YouTube
- 22 minutes
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- Free Video
NPTEL; IIT Kharagpur
Introduction to Environmental Engineering and Science
3 ratings

Explore sustainability, ecology, and environmental systems through engineering principles, covering water, waste, air pollution, and global challenges.
- YouTube
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Wondrium
Plant Science - An Introduction to Botany
3 ratings

Explore the fascinating world of flowering plants, their rapid evolution, dominance, and classification. Learn about plant taxonomy, anatomy, and the role of flowers in reproduction and ecosystem interactions.
- YouTube
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Astrophysics with Neil DeGrasse Tyson - Dark Matter, Particle Physics, & Cosmic Science
3 ratings

Explore cosmic mysteries with Neil deGrasse Tyson, from dark matter to the universe's energy balance. Uncover scientific breakthroughs, examine unsolved problems in astrophysics, and ponder the shape of space-time.
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Sports Injuries in the Foot and Ankle - Joan Williams, MD - UCLAMDChat
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Learn about common foot and ankle sports injuries, their causes, and treatment options from an expert orthopaedic surgeon in this comprehensive overview.
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Caleb Curry
IT and Computer Science
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Comprehensive exploration of computer science fundamentals, including binary, number systems, operating systems, and cybersecurity, with practical applications and hands-on tutorials.
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3 ratings

Explore the evolving landscape of sports media and Generation Z engagement with industry insider Rhodri Williams, uncovering strategies for capturing this demographic's attention.
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Foundations of Science

Explore fundamental scientific principles, methods, and critical thinking skills essential for understanding the natural world and conducting research.
- Independent
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