Number theory courses can help you learn prime numbers, divisibility rules, modular arithmetic, and integer properties. You can build skills in problem-solving, logical reasoning, and algorithmic thinking, that support tackling complex mathematical challenges. Many courses introduce tools like Python for implementing algorithms and mathematical software for exploring number patterns, enabling you to apply your knowledge in practical situations such as cryptography and coding theory.

Skills you'll gain: HTML and CSS, Responsive Web Design, Bootstrap (Front-End Framework), Web Design, Web Design and Development, Cascading Style Sheets (CSS), Web Applications, User Interface (UI), Front-End Web Development, User Interface (UI) Design, UI Components, Web Development Tools
Beginner · Specialization · 1 - 3 Months

Skills you'll gain: Musical Composition, Music, Music Theory, Music Performance
Intermediate · Course · 1 - 3 Months

Berklee
Skills you'll gain: Music Theory, Music, Musical Composition, File Management, Instrumental Music, Music Performance, Performing Arts, Self-Awareness, Media Production, Verbal Communication Skills, Automation, Editing, Technical Support, Creativity
Beginner · Specialization · 3 - 6 Months

Skills you'll gain: Partnership Accounting, Liquidation, Financial Reporting, Securities (Finance), Technical Accounting, Legal Risk, Risk Analysis, Portfolio Risk, Accounting, Generally Accepted Accounting Principles (GAAP), Compliance Reporting, Investments, Capital Expenditure, Reconciliation, Balance Sheet, Case Studies, Financial Accounting, Finance, Financial Statements, Corporate Finance
Beginner · Specialization · 3 - 6 Months

IIMA - IIM Ahmedabad
Skills you'll gain: Leadership, Organizational Change, Organizational Leadership, Team Leadership, Change Management, Leadership and Management, Business Leadership, Business Ethics, Self-Awareness, Culture Transformation, Personal Development, Decision Making, Emotional Intelligence, Influencing, Ethical Standards And Conduct, Empowerment, Communication, Relationship Building, Ancient History, Mindfulness
Beginner · Course · 1 - 3 Months

Meta
Skills you'll gain: Version Control, Unix Commands, Git (Version Control System), GitHub, Linux Commands, Software Versioning, Command-Line Interface, Linux, Collaborative Software, File Management, Software Development Tools, Software Development, Web Development
Beginner · Course · 1 - 4 Weeks

University of California, Santa Cruz
Skills you'll gain: C++ (Programming Language), Go (Programming Language), File I/O, Data Structures, Object Oriented Programming (OOP), Software Design Patterns, Debugging, Computer Programming, Unit Testing, Programming Principles, Algorithms, C (Programming Language), Integrated Development Environments, Graph Theory, Software Testing, Artificial Intelligence, Integration Testing, Software Design, System Design and Implementation, Game Design
Intermediate · Specialization · 3 - 6 Months
University of Illinois Urbana-Champaign
Skills you'll gain: Supply And Demand, Statistical Inference, Business Analytics, Descriptive Statistics, Sampling (Statistics), Market Dynamics, Statistical Hypothesis Testing, Financial Systems, Bank Regulations, Financial Policy, Banking, International Finance, Data-Driven Decision-Making, Data Analysis, Data Presentation, Economics, Statistical Analysis, Business Economics, Peer Review, Analytics
Build toward a degree
Beginner · Specialization · 3 - 6 Months

University of Colorado Boulder
Skills you'll gain: Theoretical Computer Science, Algorithms, Graph Theory, Data Structures, Operations Research, Public Key Cryptography Standards (PKCS), Cryptography, Programming Principles, Computational Thinking, Pseudocode, Design Strategies, Computer Science, Tree Maps, Encryption, Linear Algebra, Combinatorics, Mathematical Modeling, Advanced Mathematics, IBM Cloud, Python Programming
Build toward a degree
Advanced · Specialization · 1 - 3 Months

Coursera
Skills you'll gain: Canva (Software), Logo Design, Branding, Brand Strategy, Style Guides, Typography, Brand Management, Creative Design, Marketing Design, Graphic Design, Color Theory, Graphic and Visual Design, Digital Design, Governance, Asset Management, Layout Design, Scalability
Beginner · Course · 1 - 4 Weeks

Princeton University
Skills you'll gain: Graph Theory, Data Structures, Algorithms, Theoretical Computer Science, Operations Research, Computational Thinking, Computer Programming, Network Routing, Java Programming, Linear Algebra
Intermediate · Course · 3 - 6 Months
Skills you'll gain: Model Deployment, MLOps (Machine Learning Operations), AI Security, Cloud Deployment, DevOps, CI/CD, Artificial Intelligence and Machine Learning (AI/ML), System Monitoring, Software Versioning, Data-Driven Decision-Making
Intermediate · Course · 1 - 4 Weeks