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.

The University of Sydney
Skills you'll gain: Linear Algebra, Markov Model, Geometry, Arithmetic, Algebra, General Mathematics, Advanced Mathematics, Probability, Mathematics and Mathematical Modeling, Mathematical Theory & Analysis, Mathematical Modeling, Applied Mathematics, Statistical Methods, Engineering Analysis
Intermediate · Course · 1 - 4 Weeks

Skills you'll gain: React Native, Flutter (Software), Mobile Development, React Redux, React.js, Ajax, Javascript, JavaScript Frameworks, Apple iOS, Front-End Web Development, Data Structures, Debugging, iOS Development, User Story, Android Development, UI Components, Cross Platform Development, JSON, Full-Stack Web Development, Scripting
Beginner · Specialization · 3 - 6 Months

University of Cape Town
Skills you'll gain: Climate Change Mitigation, Sustainable Development, Economic Development, Environmental Policy, Policy Development, Mathematical Modeling, Systems Thinking, Complex Problem Solving, Research, Innovation, Stakeholder Engagement
Intermediate · Course · 1 - 3 Months

Board Infinity
Skills you'll gain: Problem Solving, Vocabulary, Logical Reasoning, Critical Thinking, Data Literacy, Arithmetic, Decision Making, Deductive Reasoning, Data Analysis, Analytical Skills, Complex Problem Solving, Grammar, English Language, Case Studies, Literacy, Learning Strategies, Applied Mathematics, Data-Driven Decision-Making, Quantitative Research, Estimation
Beginner · Specialization · 3 - 6 Months

University of California, Irvine
Skills you'll gain: Test Planning, Embedded Software, Embedded Systems, Functional Requirement, Systems Design, System Requirements, System Design and Implementation, Software Design, Prototyping, Technical Design, Conceptual Design, Python Programming
Mixed · Course · 1 - 3 Months

Michigan State University
Skills you'll gain: Game Design, Peer Review, Storytelling, Writing, Content Creation, Creative Thinking, Active Listening, Constructive Feedback, Storyboarding
Beginner · Course · 1 - 3 Months

École Polytechnique
Skills you'll gain: Vibrations, Hydraulics, Environmental Engineering, Civil Engineering, Mechanical Engineering, Engineering, Mechanics, Chemical and Biomedical Engineering, Simulation and Simulation Software, Applied Mathematics, Biomedical Engineering, Mathematical Modeling
Intermediate · Course · 1 - 3 Months

California Institute of the Arts
Skills you'll gain: Game Design, Prototyping, Software Design Documents, Visualization (Computer Graphics), Ideation, Conceptual Design, Usability Testing, Graphic and Visual Design, Peer Review, Creativity
Intermediate · Course · 1 - 3 Months

Lund University
Skills you'll gain: Sustainable Business, Sustainable Development, Sustainable Systems, Socioeconomics, Environmental Social And Corporate Governance (ESG), Economics, Environmental Policy, Business Strategies, Consumer Behaviour, Climate Change Mitigation
Beginner · Course · 1 - 3 Months
American Museum of Natural History
Skills you'll gain: Life Sciences, Biology, Environmental Science, Environment, Biochemistry, Physiology, Hydrology, Environmental Issue, Anatomy, Water Quality, Behavioral Health, Research
Beginner · Course · 1 - 3 Months

University of Colorado Boulder
Skills you'll gain: Real-Time Operating Systems, Embedded Systems, Embedded Software, Hardware Architecture, Electronic Systems, Performance Tuning, Systems Architecture, Software Architecture, Verification And Validation, System Programming, Debugging, Real Time Data, System Design and Implementation, Software Technical Review, Systems Engineering, Operating Systems, Software Design, System Software, Ubuntu, Software Systems
Build toward a degree
Intermediate · Specialization · 3 - 6 Months

Curtis Institute of Music
Skills you'll gain: Musical Composition, Music History, Instrumental Music, Classical Music, Music Theory, Music Performance
Mixed · Course · 1 - 3 Months