HTML, CSS, and JavaScript courses can help you learn web page structure, styling, and interactivity, along with responsive design and accessibility practices. You can build skills in creating layouts, implementing animations, and optimizing user experiences across different devices. Many courses introduce tools like code editors, version control systems, and browser developer tools, that support testing and refining your projects. By mastering these skills and tools, you’ll be well-equipped to develop engaging websites and applications.

Skills you'll gain: Jest (JavaScript Testing Framework), Test Driven Development (TDD), Test Script Development, Test Case, Web Development Tools, Unit Testing, Development Testing, Software Testing, Browser Compatibility, Testability, Test Tools, JavaScript Frameworks, Javascript, Mockups, Object Oriented Programming (OOP)
Intermediate · Course · 1 - 4 Weeks

Skills you'll gain: Git (Version Control System), GitHub, Version Control, Collaborative Software, Software Versioning, Open Source Technology, Command-Line Interface, DevOps
Beginner · Course · 1 - 4 Weeks

University of Colorado Boulder
Skills you'll gain: Probability, Statistical Inference, Estimation, Probability & Statistics, Statistical Methods, Probability Distribution, Statistics, Bayesian Statistics, Markov Model, Statistical Analysis, Sampling (Statistics), Applied Mathematics, Artificial Intelligence, Generative AI, Data Analysis, Correlation Analysis, Data Science, Machine Learning Algorithms
Build toward a degree
Intermediate · Specialization · 3 - 6 Months

Skills you'll gain: Browser Compatibility, Web Applications, Node.JS, Javascript, Network Troubleshooting, Server Side, Web Development Tools, Live Streaming, Front-End Web Development, Debugging, Real Time Data, Web Servers, Telecommunications, Servers, Network Protocols
Intermediate · Course · 1 - 3 Months

Skills you'll gain: Occupational Safety and Health Administration (OSHA), Occupational Safety And Health, Health And Safety Standards, Occupational Health, Safety Standards, Environment Health And Safety, Safety Audits, Compliance Management, Regulatory Compliance, Labor Law
Intermediate · Course · 1 - 4 Weeks

Skills you'll gain: Hypertext Markup Language (HTML), Frontend Performance, HTML and CSS, Web Applications, Javascript, Performance Tuning, Software Development
Intermediate · Guided Project · Less Than 2 Hours

Saïd Business School, University of Oxford
Skills you'll gain: Prompt Engineering, Retrieval-Augmented Generation, Generative AI, Agentic systems, Generative AI Agents, Prompt Patterns, Agentic Workflows, Generative Model Architectures, Multimodal Prompts, AI literacy, LLM Application, ChatGPT, AI Workflows, AI Product Strategy, Large Language Modeling, Model Evaluation, Responsible AI, Decision Making
Beginner · Course · 1 - 3 Months

University of Pennsylvania
Skills you'll gain: Financial Statements, Financial Statement Analysis, Return On Investment, Accrual Accounting, Financial Accounting, Capital Budgeting, Financial Reporting, Accruals, Accounting, Finance, Inventory Accounting, Financial Analysis, Balance Sheet, Financial Acumen, Portfolio Management, Income Statement, Financial Forecasting, Equities, Generally Accepted Accounting Principles (GAAP), Corporate Finance
Beginner · Specialization · 3 - 6 Months

Skills you'll gain: Application Programming Interface (API), Javascript, Web Development
Intermediate · Course · 1 - 4 Weeks

Skills you'll gain: Sales Territory Management, B2B Sales, Regional Sales, Selling Techniques, Sales Management, Consultative Selling, Sales, Sales Strategy, Market Analysis, Sales Process, Market Intelligence, Closing (Sales), Customer Relationship Management (CRM) Software, Competitive Intelligence, Customer Relationship Management, Negotiation
Intermediate · Course · 1 - 4 Weeks

University of Illinois Urbana-Champaign
Skills you'll gain: Instructional and Curriculum Design, Needs Assessment, Instructional Design, Learning Theory, Diversity and Inclusion, Training and Development, People Development, Education and Training, Pedagogy, Instructional Strategies, Systems Analysis, Job Analysis, Process Analysis, Analysis, Learning Styles
Mixed · Course · 1 - 3 Months

Skills you'll gain: Medical Terminology, Pathology, Medical Records, Anatomy, Cell Biology, Physiology, Diagnostic Tests, Nutrition and Diet
Beginner · Course · 1 - 4 Weeks