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.

Edureka
Skills you'll gain: API Design, API Gateway, Application Programming Interface (API), Postman API Platform, Restful API, API Testing, Data Validation, Authentications, OAuth, Cloud API, Microservices, Application Deployment, CI/CD, Authorization (Computing), Secure Coding, Application Frameworks, Performance Tuning, Application Lifecycle Management, Prometheus (Software), Grafana
Intermediate · Specialization · 1 - 3 Months

Johns Hopkins University
Skills you'll gain: Algebra, Advanced Mathematics, General Mathematics, Applied Mathematics, Analytical Skills, Mathematical Modeling, Geometry, Graphing
Beginner · Course · 1 - 3 Months
University of Illinois Urbana-Champaign
Skills you'll gain: Project Closure, Project Implementation, Waterfall Methodology, Earned Value Management, Sprint Retrospectives, Project Controls, Agile Project Management, Project Management, Scope Management, Agile Methodology, Sprint Planning, Team Leadership, Project Schedules, Project Planning, Cost Management, Timelines, Scheduling, Stakeholder Communications, Resource Management
Build toward a degree
Beginner · Course · 1 - 3 Months

Skills you'll gain: Waste Minimization, Environmental Engineering, Sustainable Engineering, Civil Engineering, Environmental Regulations, Sustainable Technologies, Environmental Resource Management, Environmental Laws, Environmental Policy, Transportation Operations, Traffic Flow Optimization, Environmental Monitoring, Estimation, Internet Of Things, Network Routing, Emerging Technologies
Intermediate · Course · 1 - 4 Weeks
University of London
Skills you'll gain: Computer Science, Debugging, Development Environment, Computer Systems, Web Applications, Arithmetic, Computer Literacy, Javascript, Network Security, Computer Networking, Computer Programming Tools, Computer Graphics, Web Design and Development, Software Development Tools, Cybersecurity, Computer Programming, Computational Thinking, General Mathematics, Systems Of Measurement, Problem Solving
Build toward a degree
Beginner · Specialization · 1 - 3 Months

Skills you'll gain: Penetration Testing, Vulnerability Scanning, Cyber Security Assessment, Vulnerability Assessments, MITRE ATT&CK Framework, Threat Detection, Infrastructure Security, Payment Card Industry (PCI) Data Security Standards, NIST 800-53, Network Analysis, General Data Protection Regulation (GDPR)
Intermediate · Course · 1 - 4 Weeks
University of Pennsylvania
Skills you'll gain: Goal Setting, Empathy & Emotional Intelligence, Emotional Intelligence, Smart Goals, Personal Development, Overcoming Obstacles, Productivity, Positive Behavior Support, Optimism, Self-Awareness, Self-Motivation, Growth Mindedness, Cognitive flexibility, Psychology, Creativity, Curiosity
Beginner · Course · 1 - 4 Weeks

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

SkillUp
Skills you'll gain: Personally Identifiable Information, Cybersecurity, General Data Protection Regulation (GDPR), Information Privacy, Data Security, Threat Detection, Data Loss Prevention, Incident Response, Data Governance, Law, Regulation, and Compliance, Data Management, Data Storage, Data Integrity, Data Ethics, Regulation and Legal Compliance
Beginner · Course · 1 - 4 Weeks

Skills you'll gain: IT Security Architecture, Security Controls, Cryptography, Security Engineering, Application Security, Vulnerability Assessments, Information Systems Security, Encryption, Cybersecurity, Hardening, Infrastructure Security, Computer Security, Threat Modeling, Network Security, Public Key Infrastructure, Authentications, Data Integrity
Intermediate · Course · 1 - 4 Weeks

Skills you'll gain: Payroll, Payroll Administration, Payroll Processing, Payroll Tax, Sales Tax, Balance Sheet, Accounting, Accounts Payable, Financial Accounting, General Accounting, Equities, Bookkeeping, General Ledger, Mortgage Loans, Loans, Tax Compliance
Beginner · Course · 1 - 4 Weeks

University of California, Davis
Skills you'll gain: Proposal Writing, Fundraising, Prospecting and Qualification, Business Writing, Stakeholder Management, Negotiation, Compliance Reporting, Relationship Building, Communication Strategies
Beginner · Course · 1 - 3 Months