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 Illinois Urbana-Champaign
Skills you'll gain: Environmental Monitoring, Hydrology, Environmental Engineering and Restoration, Water Resource Management, Land Management, Natural Resource Management, Water Resources, Water Quality, Climate Change Adaptation, Environmental Science, Biology, Research Reports, Environment and Resource Management, Environment, Geographic Information Systems, Laboratory Testing, Geospatial Information and Technology, Technical Documentation, Microbiology
Intermediate · Specialization · 1 - 3 Months

Coursera
Skills you'll gain: Canva (Software), Copywriting, Social Media Content, Content Creation, Social Media, Instagram, Marketing Materials, Brand Strategy, Storytelling, Branding, Graphic and Visual Design, Social Impact, Software Development Tools, Build Tools, Social Work, Time Management
Intermediate · Course · 1 - 4 Weeks

Johns Hopkins University
Skills you'll gain: Calculus, Applied Mathematics, Trigonometry, Mathematical Modeling, Algebra, Derivatives, Geometry
Intermediate · Course · 1 - 3 Months

Skills you'll gain: Stakeholder Management, Accountability, Product Management, Prioritization, Scalability, Conflict Management
Intermediate · Course · 3 - 6 Months

Skills you'll gain: AWS CloudFormation, Amazon CloudWatch, Version Control, Infrastructure as Code (IaC), Serverless Computing, CI/CD, Scalability, Amazon Web Services, DevOps, Cloud Deployment, Cloud Computing Architecture, Amazon Elastic Compute Cloud, Application Deployment, Cloud Infrastructure, Software Development Life Cycle, Network Architecture, System Monitoring, Load Balancing
Beginner · Course · 1 - 4 Weeks

Skills you'll gain: Responsive Web Design, Human Computer Interaction, Interaction Design
Beginner · Course · 1 - 4 Weeks

AI CERTs
Skills you'll gain: Responsible AI, Agentic Workflows, Risking, Generative AI Agents, AI Enablement, Artificial Intelligence and Machine Learning (AI/ML), Power BI, AI Workflows, Accounting and Finance Software, Regulatory Compliance, Automation, Financial Data, Wealth Management, Compliance Management, Generative AI, Financial Forecasting, Data Processing, Finance, Workflow Management, General Finance
Intermediate · Course · 1 - 3 Months

Skills you'll gain: Performance Reporting, Content Performance Analysis, Web Analytics, Google Analytics, Driving engagement, Performance Analysis, Marketing Analytics, Content Strategy, Data Analysis, Data-Driven Decision-Making, Target Audience, Analytics, Customer Insights, Trend Analysis, Marketing Strategies, Process Optimization, Multimedia
Beginner · Course · 1 - 3 Months

Skills you'll gain: Digital Forensics, Cyber Threat Hunting, Incident Response, Cyber Threat Intelligence, Penetration Testing, Computer Security Incident Management, Threat Modeling, Threat Detection, MITRE ATT&CK Framework, Cryptography, Security Testing, Incident Management, Application Security, Encryption, Cybersecurity, Security Management, Vulnerability Scanning, Cyber Security Assessment, Vulnerability Assessments, AI Security
Beginner · Specialization · 3 - 6 Months

Logical Operations
Skills you'll gain: Tableau Software, Report Writing, Data Visualization Software, Dashboard, Data Visualization, Data Analysis, Business Intelligence, Data-Driven Decision-Making, Data Storytelling, Data Presentation, Ad Hoc Reporting, Interactive Data Visualization, Microsoft Excel, Data Manipulation, Data Sharing, Microsoft PowerPoint, Data Management, Productivity Software, Microsoft Office
Mixed · Course · 1 - 3 Months

University of Amsterdam
Skills you'll gain: Laboratory Experience, Laboratory Techniques, User Feedback, Experimentation, Research
Intermediate · Course · 1 - 3 Months

Skills you'll gain: People Management, Scope Management, Project Scoping, Project Management Institute (PMI) Methodology, Project Schedules, Scheduling, Team Leadership, Procurement, Project Management, Requirements Management, Agile Project Management, Cost Management, Stakeholder Engagement, Stakeholder Management, Business Process, Project Risk Management, Quality Management, Quality Assurance and Control, Risk Management, Communication Strategies
Beginner · Course · 1 - 3 Months