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.

Coursera
Skills you'll gain: Collaborative Software, Style Guides, Brand Management, Version Control, Workflow Management, Compliance Auditing, Marketing Analytics, Branding, Marketing Design, Document Management, Quality Assurance, Digital Marketing
Beginner · Course · 1 - 4 Weeks

Yale University
Skills you'll gain: Health Disparities, Health Systems, Public Health, Epidemiology, Social Determinants Of Health, Health Promotion, Infectious Diseases, Chronic Diseases, Health Policy, Environment Health And Safety, Medical Science and Research, Injury Prevention, Nutrition and Diet
Mixed · Course · 1 - 3 Months

University of Michigan
Skills you'll gain: Financial Modeling, Market Data, Financial Analysis, Cash Flows, Loans, Financial Statements, Finance, Portfolio Risk, Risk Management, Portfolio Management, Business Valuation, Corporate Finance, Capital Budgeting, Securities (Finance), Mortgage Loans, Risk Analysis, Financial Forecasting, Excel Formulas, Equities, Investments
Beginner · Specialization · 3 - 6 Months

Skills you'll gain: Bookkeeping, QuickBooks (Accounting Software), Accruals, Ledgers (Accounting), Month End Closing, Accrual Accounting, Accounting Software, General Ledger, Accounting Records, Accounting, General Accounting, Reconciliation
Beginner · Course · 1 - 4 Weeks
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

Microsoft
Skills you'll gain: CI/CD, C# (Programming Language), Azure DevOps, Load Balancing, Continuous Integration, Role-Based Access Control (RBAC), Scalability, Object Oriented Programming (OOP), Authentications, ASP.NET, Debugging, SQL, Microsoft Copilot, .NET Framework, Relational Databases, Database Management, Graph Theory, Back-End Web Development, Program Development, Data Structures
Beginner · Professional Certificate · 3 - 6 Months

University of Pennsylvania
Skills you'll gain: Market Dynamics, Economics, Socioeconomics, Supply And Demand, Market Analysis, Market Share, Competitive Analysis, Public Policies, Policty Analysis, Research, and Development, Consumer Behaviour
Mixed · Course · 1 - 3 Months

EDHEC Business School
Skills you'll gain: Investment Management, Portfolio Management, Portfolio Risk, Investments, Return On Investment, Asset Management, Risk Analysis, Financial Modeling, Risk Management, Financial Analysis, NumPy, Python Programming, Simulations, Pandas (Python Package), Matplotlib, Data Manipulation
Mixed · Course · 1 - 4 Weeks

University of Colorado System
Skills you'll gain: Change Management, Organizational Change, Agile Methodology, Meeting Facilitation, Positivity, Team Building, Resilience, Scrum (Software Development), Team Management, Sprint Retrospectives, Innovation, Sprint Planning, Culture Transformation, Organizational Development, Agile Project Management, Virtual Teams, Team Leadership, Business Transformation, Leadership Development, Project Management
Beginner · Specialization · 3 - 6 Months

Duke University
Skills you'll gain: Music, Music Theory, Aesthetics, World Music, Cultural Diversity, Psychology, Physiology, Biology
Mixed · Course · 1 - 3 Months

Skills you'll gain: Serverless Computing, Image Analysis, API Gateway, Computer Vision, Event-Driven Programming, Amazon S3, Microservices, Amazon Web Services, Authentications, Cloud Computing Architecture, Amazon DynamoDB, API Design, Application Development
Intermediate · Course · 1 - 4 Weeks

Northwestern University
Skills you'll gain: Social Media, Social Media Marketing, Target Audience, Social Media Strategy, Digital Transformation, Professional Networking, Marketing Strategies, Social Network Analysis, Market Analysis, Real Time Data
Mixed · Course · 1 - 4 Weeks