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 Colorado System
Skills you'll gain: Intrusion Detection and Prevention, Threat Detection, Incident Response, Computer Security Incident Management, Cybersecurity, Threat Management, Data Security, Cyber Attacks, Endpoint Security, Network Security, Cyber Security Assessment, Firewall
Beginner · Course · 1 - 3 Months

Multiple educators
Skills you'll gain: Sustainable Design, Corporate Sustainability, Environmental Social And Corporate Governance (ESG), Sustainable Business, Sustainability Reporting, Sustainable Technologies, Sustainable Development, Business Ethics, Operations Management, Supply Chain Management, Supply Chain, Manufacturing Operations, Strategic Sourcing, Procurement, Supplier Relationship Management, Environmental Engineering, Labor Compliance, Compliance Management, Case Studies, Product Design
Build toward a degree
Beginner · Specialization · 1 - 3 Months

Skills you'll gain: Microsoft Excel, Excel Formulas, Spreadsheet Software, Data Analysis Expressions (DAX), Microsoft 365, Data Validation
Intermediate · Guided Project · Less Than 2 Hours

Princeton University
Skills you'll gain: Graph Theory, Data Structures, Algorithms, Theoretical Computer Science, Operations Research, Computational Thinking, Computer Programming, Network Routing, Java Programming, Linear Algebra
Intermediate · Course · 3 - 6 Months

Duke University
Skills you'll gain: Deductive Reasoning, Critical Thinking, Logical Reasoning, Analysis, Diagram Design, Probability, Sampling (Statistics), Persuasive Communication, Research, Sample Size Determination, Writing, Case Studies, Oral Expression, Correlation Analysis, Communication, Scientific Methods, Information Architecture, Business Communication, Interactive Learning
Beginner · Specialization · 3 - 6 Months

University of Colorado Boulder
Skills you'll gain: Control Systems, Basic Electrical Systems, Electrical Systems, Power Electronics, Three-Phase, Torque (Physics), Electrical Equipment, Embedded Software, Electronics, Electrical Wiring, Electronic Hardware, Design Specifications, System Requirements, Laboratory Experience, Electronic Components
Build toward a degree
Intermediate · Course · 1 - 3 Months

University of Colorado System
Skills you'll gain: Penetration Testing, Application Security, Secure Coding, Exploitation techniques, Software Design Patterns, Vulnerability Assessments, Amazon Web Services, SQL, Operating Systems, C (Programming Language)
Intermediate · Course · 1 - 4 Weeks

Skills you'll gain: TypeScript, Javascript, React.js, JavaScript Frameworks, Web Development Tools, Application Development, Web Development
Intermediate · Guided Project · Less Than 2 Hours

Berklee
Skills you'll gain: Entrepreneurship, Creativity, Team Building, Creative Thinking, Presentations, Innovation, Self-Starter, Brand Strategy, Open Mindset, Collaboration, Product Development, Visionary, Curiosity, Professional Networking, Problem Solving
Beginner · Course · 1 - 4 Weeks

Microsoft
Skills you'll gain: Virtual Private Networks (VPN), Cybersecurity, Computing Platforms, Multi-Factor Authentication, Authentications, Information Systems Security, Network Security, Technical Support and Services, Application Security, Data Security, Information Privacy, Servers, Cloud Computing, Network Administration, Encryption, Identity and Access Management
Beginner · Course · 1 - 4 Weeks
University of California San Diego
Skills you'll gain: Human Computer Interaction, Human Factors, User Interface (UI), Usability, Interaction Design, Information Architecture, User Interface and User Experience (UI/UX) Design, Prototyping
Mixed · Course · 1 - 4 Weeks

Duke University
Skills you'll gain: Advertising, Media and Communications, Digital Advertising, Culture, Art History, Creativity, Consumer Behaviour, Business Ethics, Diversity and Inclusion
Mixed · Course · 1 - 3 Months