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: Application Lifecycle Management, CI/CD, Continuous Integration, Microsoft Power Platform, Continuous Delivery, Continuous Deployment, Software Development Life Cycle, Enterprise Application Management, Change Control, Application Deployment, Azure DevOps, Release Management, Microsoft Azure, Configuration Management, Multi-Tenant Cloud Environments, Command-Line Interface, Version Control, Data Import/Export, YAML, Data Science
Beginner · Course · 3 - 6 Months
Dartmouth College
Skills you'll gain: Environment, Environmental Issue, Environmental Science, Demography, Energy and Utilities, Sustainable Development, Biology, Hydrology, Water Quality, Nutrition and Diet, Oil and Gas, Electric Power Systems, Systems Thinking, Water Resource Management, Natural Resource Management, Sustainable Technologies, Physics, Climate Change Mitigation, Construction, Chemistry
Beginner · Specialization · 1 - 3 Months

University of Rochester
Skills you'll gain: Music History, Music, Music Theory, Musical Composition, Instrumental Music, Music Performance, Creativity
Beginner · Course · 1 - 3 Months
IE Business School
Skills you'll gain: Brand Strategy, Branding, Brand Awareness, Logo Design, Brand Management, Target Audience, Target Market, Consumer Behaviour, Value Propositions, Marketing, Customer Insights, Marketing Psychology, Marketing Strategies, Advertising, Competitive Analysis, Typography, Storytelling, Color Theory
Intermediate · Course · 1 - 3 Months

The Chinese University of Hong Kong
Skills you'll gain: Patient Evaluation, General Medicine, Health Care, Health Assessment, Patient Education and Support, Physical Therapy, Preventative Care, Clinical Assessment, Pharmacology
Intermediate · Course · 1 - 3 Months

Skills you'll gain: Data Mapping, Middleware, Verification And Validation, Business Process Automation, Process Driven Development, Data Integration, File Transfer Protocol (FTP), Test Automation, Development Testing, Java, Data Validation, Integration Testing, System Configuration, Debugging, File Management
Mixed · Course · 1 - 4 Weeks

Skills you'll gain: Object Oriented Programming (OOP), C++ (Programming Language), Data Structures, Software Design Patterns, Programming Principles, File Management, Algorithms, Simulations
Advanced · Course · 1 - 4 Weeks

University of Pennsylvania
Skills you'll gain: R Programming, R (Software), Statistical Analysis, Statistical Methods, Statistical Modeling, Data Analysis, Probability & Statistics, Regression Analysis, Research Design, Graph Theory
Intermediate · Course · 1 - 3 Months

AI CERTs
Skills you'll gain: Threat Modeling, Secure Coding, Application Security, Blockchain, Scripting, Vulnerability Assessments, Scalability, Application Design, Payment Systems, Transaction Processing, Cryptography, FinTech, Emerging Technologies
Intermediate · Course · 1 - 4 Weeks

University of Colorado Boulder
Skills you'll gain: Database Design, SQL, Database Management Systems, NoSQL, Database Development, Relational Databases, Data Warehousing, Database Theory, Database Systems, Database Administration, Databases, Database Architecture and Administration, Database Software, Database Management, Data Modeling, Query Languages, MongoDB, Big Data, Data Architecture, Database Application
Build toward a degree
Beginner · Specialization · 3 - 6 Months

Illinois Institute of Technology
Skills you'll gain: Process Improvement, Pay Per Click Advertising, Digital Marketing, Responsible AI, Process Management, Global Marketing, Business Process, Digital Transformation, Culture Transformation, Financial Statement Analysis, Machine Learning Algorithms, Capital Budgeting, Product Lifecycle Management, Market Dynamics, Paid media, Design Thinking, Leadership and Management, Game Theory, Microsoft Excel, Business Strategy
Earn a degree
Degree · 1 - 4 Years

Skills you'll gain: User Experience Design, Usability, User Experience, User Interface and User Experience (UI/UX) Design, Threat Modeling, UI/UX Strategy, Interaction Design, Application Security, Authentications, Human Centered Design, Security Strategy, Usability Testing, Authorization (Computing), Security Controls, Multi-Factor Authentication, Security Awareness, Computer Security Awareness Training, Cybersecurity, Safety Standards, Information Privacy
Intermediate · Course · 1 - 3 Months