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.

Johns Hopkins University
Skills you'll gain: Statistical Hypothesis Testing, Sampling (Statistics), Regression Analysis, Bayesian Statistics, Statistical Analysis, Probability & Statistics, Statistical Inference, Statistical Methods, Statistical Modeling, Linear Algebra, Probability, Probability Distribution, R Programming, Biostatistics, Data Science, Statistics, Mathematical Modeling, Data Analysis, Data Modeling, Applied Mathematics
Advanced · Specialization · 3 - 6 Months

Berklee
Skills you'll gain: Music History, Intellectual Property, Contract Negotiation, Music, Negotiation, Entrepreneurship, Business, Innovation, Team Management, Revenue Management, Digital Content, Law, Regulation, and Compliance
Mixed · Course · 1 - 4 Weeks

Berklee
Skills you'll gain: Music Theory, Musical Composition, Music, Music Performance
Beginner · Course · 1 - 4 Weeks

Wesleyan University
Skills you'll gain: Storytelling, Writing and Editing, Editing, Proofreading, Writing, Creativity
Mixed · Course · 1 - 4 Weeks

University of Colorado Boulder
Skills you'll gain: Field-Programmable Gate Array (FPGA), Hardware Design, Verification And Validation, Electronic Systems, Embedded Systems, Electronics Engineering, Application Specific Integrated Circuits, Electronic Hardware, Electronics, Systems Design, Software Design, Program Development, Integrated Development Environments, System Design and Implementation, Computer Architecture, Eclipse (Software), Computational Logic, Hardware Architecture, Software Development, Computer Engineering
Build toward a degree
Intermediate · Specialization · 3 - 6 Months

California Institute of the Arts
Skills you'll gain: Graphic Design, Graphic and Visual Design, Art History, Design, Logo Design, Design Strategies, Visual Design, Typography, Branding, Design Elements And Principles, Advertising, Aesthetics, Brand Marketing, Creativity, Culture
Beginner · Course · 1 - 4 Weeks

Universitat Autònoma de Barcelona
Skills you'll gain: Databases, Relational Databases, Data Integration, Database Management, Data Entry, SQL Server Integration Services (SSIS), Data Import/Export, Geographic Information Systems, Software Installation, Wealth Management
Intermediate · Course · 1 - 4 Weeks

Berklee
Skills you'll gain: Musical Composition, Music Theory, Music, Peer Review, Music Performance, Instrumental Music, Classical Music
Beginner · Specialization · 3 - 6 Months

Universitat Autònoma de Barcelona
Skills you'll gain: Trigonometry, Integral Calculus, Calculus, Arithmetic, Advanced Mathematics, Algebra, Geometry, Applied Mathematics, Graphing, Derivatives, Problem Solving
Beginner · Course · 1 - 3 Months

Berklee
Skills you'll gain: Music Theory, Music, Musical Composition, Instrumental Music, Music Performance
Mixed · Course · 1 - 3 Months

Universidad de los Andes
Skills you'll gain: Storytelling, Liberal Arts, Spanish Language, Literacy, Writing and Editing, Language Competency
Mixed · Course · 1 - 3 Months

University of North Texas
Skills you'll gain: Arithmetic, Probability & Statistics, Graphing, Geometry, Statistics, Algebra, Applied Mathematics, Systems Of Measurement
Beginner · Course · 1 - 4 Weeks