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.

University of Pennsylvania
Skills you'll gain: Scientific Methods, Science and Research, Research, Experimentation, Research Methodologies, Research Design, Data Collection, Peer Review, Simulations, Ethical Standards And Conduct
Intermediate · Course · 1 - 4 Weeks

Universidad de los Andes
Skills you'll gain: Storytelling, World History, Liberal Arts, Writing, Cultural Diversity, Discussion Facilitation, Timelines
Beginner · Course · 1 - 3 Months

Board Infinity
Skills you'll gain: Angular, Node.JS, Full-Stack Web Development, HTML and CSS, User Interface (UI), Application Deployment, Back-End Web Development, Javascript, MongoDB, User Interface (UI) Design, Front-End Web Development, Web Applications, JavaScript Frameworks, Scalability, Restful API, Middleware, Bootstrap (Front-End Framework), jQuery, Databases, Cascading Style Sheets (CSS)
Intermediate · Specialization · 1 - 3 Months

The Museum of Modern Art
Skills you'll gain: Photography, Aesthetics, Photo Editing, Art History, Storytelling, Creativity
Mixed · Course · 1 - 3 Months

University of Colorado Boulder
Skills you'll gain: Chemical Engineering, Quantitative Research, Chemistry, Thermal Management, Mechanical Engineering, Engineering Calculations, Numerical Analysis, Energy and Utilities, Engineering Analysis, Statistical Methods, Differential Equations, Physics, Engineering, Simulation and Simulation Software, Mechanics, Oil and Gas, Probability Distribution, Materials science, Mathematical Modeling, Applied Mathematics
Advanced · Specialization · 3 - 6 Months

University at Buffalo
Skills you'll gain: Electrical Systems, Electrical Power, Basic Electrical Systems, HVAC, Energy and Utilities, Semiconductors, Cost Benefit Analysis, Sustainable Technologies, Return On Investment, System Configuration
Beginner · Course · 1 - 3 Months

École Polytechnique
Skills you'll gain: Materials science, Differential Equations, Numerical Analysis, Applied Mathematics, Chemistry, Physics, Calculus
Advanced · Course · 1 - 4 Weeks

Erasmus University Rotterdam
Skills you'll gain: Case Studies, Research, Scientific Methods, Investigation
Beginner · Course · 1 - 3 Months

Berklee
Skills you'll gain: Musical Composition, Music Theory, Music, Instrumental Music, Writing, Creativity
Intermediate · Course · 1 - 3 Months
Georgia Institute of Technology
Skills you'll gain: Materials science, Chemistry, Structural Analysis, Mechanical Engineering, Chemical Engineering, Physical Science, Semiconductors
Mixed · Course · 1 - 3 Months

University of Rochester
Skills you'll gain: Physics, Physical Science, Life Sciences, Biology, Environment, General Science and Research, Simulations, Scientific Methods, Scientific Visualization, Systems Of Measurement, Chemistry
Beginner · Course · 1 - 4 Weeks

Sapienza University of Rome
Skills you'll gain: Ancient History, World History, Art History, Social Sciences, Anthropology, Water Resources, European History, Cultural Diversity, Sociology, Economics
Beginner · Course · 1 - 3 Months