Courses from 1000+ universities
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.
600 Free Google Certifications
Personal Creativity
Entrepreneurship
Instructional Design
Ecology and Wildlife Conservation
The Science of Well-Being
Mountains 101
Organize and share your learning with Class Central Lists.
View our Lists Showcase
Explore a wide range of free and certified Graph theory online courses. Find the best Graph theory training programs and enhance your skills today!
This tutorial introduces fundamental concepts in information theory.
Effective field theory is a fundamental framework to describe physical systems with quantum field theory.
This course introduces the core theory of modern financial economics and financial management, with a focus on capital markets and investments.
Explore computability and complexity theory with MIT's in-depth course. Covers automata, Turing machines, undecidability, NP-completeness, and advanced topics in computational theory.
Explore quantum field theory through applications in particle and condensed matter physics, covering key concepts from classical field theories to quantum fluctuations and renormalization.
Explore consumer choice, firm theory, and equilibrium models with real-world applications. Gain insights into economic science, data analysis, and policy implications through diverse topics and case studies.
Explore poker theory and analytics, applying concepts to investment management and trading. Learn analytical techniques, strategies, and decision-making skills in this broad-based course.
Explore computability and complexity theory, covering languages, decidability, reducibility, computational measures, completeness, hierarchies, oracles, probabilistic computation, and interactive proof systems.
Master the fundamental framework of Effective Field Theory (EFT) for describing physical systems with quantum field theory, from Standard Model to HQET and SCET.
Gain a comprehensive understanding of microeconomic theory and its application to public policy, with examples from high-income countries including consumer theory, competitive analysis, and market dynamics.
Explore the fundamental tools of game theory and their economic applications, covering Nash Equilibrium, auctions, bargaining, signaling, and strategic interaction in real-world scenarios.
Explore computational approaches to music theory using Python and MIT's music21 toolkit, covering algorithms, corpus studies, machine learning, and music generation techniques.
Explore current autism theories and cutting-edge technologies designed to improve understanding and outcomes, covering communication, social interaction, cognitive overload, and independent living.
Explore how sets behave under orthogonal projections, connecting harmonic analysis, number theory, additive combinatorics, and dynamics through fundamental methods and recent developments.
Explore pitch, rhythm, notation, scales, keys, and basic harmony. Learn to read and write music, understand major and minor keys, and harmonize melodies. Ideal for music enthusiasts seeking to enhance their theoretical knowledge.
Get personalized course recommendations, track subjects and courses with reminders, and more.