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 Boulder
Skills you'll gain: Data Ethics, Computer Security Awareness Training, Ethical Standards And Conduct, Cybersecurity, Information Technology, Responsible AI, Information Privacy, Social Impact, Media and Communications, Personally Identifiable Information, Artificial Intelligence, Algorithms
Build toward a degree
Beginner · Course · 1 - 4 Weeks
University of Colorado Boulder
Skills you'll gain: Vibrations, Control Systems, Mechanics, Torque (Physics), Mechanical Engineering, Engineering Analysis, Engineering Calculations, Differential Equations, Mathematical Modeling, Simulation and Simulation Software
Advanced · Course · 1 - 4 Weeks
University of Illinois Urbana-Champaign
Skills you'll gain: Supply And Demand, Market Dynamics, Economics, Business Economics, Cost Accounting, Consumer Behaviour, Tax, Price Negotiation, Resource Allocation
Build toward a degree
Intermediate · Course · 1 - 4 Weeks

Skills you'll gain: Information Privacy, General Data Protection Regulation (GDPR), Personally Identifiable Information, Data Security, Data Governance, Data Ethics, Data Loss Prevention, Security Controls, Regulatory Compliance, Compliance Management, Compliance Training, Data Integrity, Security Strategy, Regulatory Requirements, Incident Response
Beginner · Course · 1 - 4 Weeks

Princeton University
Skills you'll gain: Theoretical Computer Science, Data Structures, Computer Science, Computer Architecture, Algorithms, Programming Principles, Computational Logic, Java Programming, Computer Hardware, Scalability
Intermediate · Course · 1 - 3 Months

Skills you'll gain: Virtual Networking, Network Routing, Network Architecture, Hybrid Cloud Computing, Network Planning And Design, Amazon Web Services, Virtual Private Networks (VPN), Cloud Computing Architecture, Network Infrastructure, Network Security, Cloud Computing, Network Analysis, Operations Management
Intermediate · Course · 1 - 4 Weeks

University of Pennsylvania
Skills you'll gain: Decision Making, Strategic Decision-Making, Risking, Complex Problem Solving, Behavioral Economics, Business Ethics, Psychology
Intermediate · Course · 1 - 4 Weeks

Skills you'll gain: Medical Privacy, Information Privacy, Health Insurance Portability And Accountability Act (HIPAA) Compliance, Personally Identifiable Information, Law, Regulation, and Compliance, Health Information Management, General Data Protection Regulation (GDPR), Regulatory Compliance, Health Care Procedure and Regulation
Mixed · Course · 1 - 4 Weeks

Skills you'll gain: Application Deployment, GitHub, Cloud Deployment, Performance Tuning, Jest (JavaScript Testing Framework), Web Development Tools, Unit Testing, System Monitoring, Performance Testing
Intermediate · Course · 1 - 4 Weeks

Coursera
Skills you'll gain: User Feedback, Functional Testing, Root Cause Analysis, UI/UX Research, Experience Design, User Experience, Problem Management, User Interface (UI) Design, Integration Testing, Application Development, Network Troubleshooting, Investigation
Intermediate · Course · 1 - 4 Weeks

University of Colorado Boulder
Skills you'll gain: Data Structures, Algorithms, Theoretical Computer Science, Programming Principles, Pseudocode, Computational Thinking, Analysis, Python Programming
Build toward a degree
Intermediate · Course · 1 - 4 Weeks

Skills you'll gain: Ansible, Git (Version Control System), Docker (Software), Containerization, SonarQube, Kubernetes, CI/CD, GitHub, Version Control, Application Deployment, Jenkins, DevOps, Continuous Integration, Continuous Deployment, Infrastructure as Code (IaC)
Intermediate · Course · 1 - 4 Weeks