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.

Sapienza University of Rome
Skills you'll gain: Ancient History, 3D Modeling, Scientific Methods, Anthropology, Investigation, Data Modeling, Cultural Diversity, Case Studies, Art History, Research, Timelines, Data Management
Mixed · Course · 1 - 3 Months

Skills you'll gain: OAuth, JSON, Data Wrangling, Application Programming Interface (API), API Design, Application Security
Intermediate · Course · 1 - 4 Weeks

The University of Edinburgh
Skills you'll gain: Applied Behavior Analysis, Behavior Management, Cultural Diversity, General Science and Research, Scientific Methods, Caregiving, Non-Verbal Communication, Ethical Standards And Conduct, Research, Biology
Mixed · Course · 1 - 3 Months

Skills you'll gain: Image Analysis, Image Quality, Matlab, Computer Vision, Digital Signal Processing, Spatial Data Analysis, Medical Imaging, Spatial Analysis, Algorithms
Beginner · Course · 1 - 4 Weeks

Skills you'll gain: Threat Modeling, IT Security Architecture, Network Security, Internet Of Things, Threat Detection, Cloud Security, Security Engineering, Infrastructure Security, Vulnerability Management, Identity and Access Management, Information Systems Security, Encryption, Incident Response, Threat Management, Cybersecurity, Security Strategy, Security Controls, Penetration Testing, Vulnerability Assessments, Cloud Solutions
Intermediate · Specialization · 1 - 3 Months

Coursera
Skills you'll gain: Excel Formulas, Data Validation, Microsoft Excel, Accounting and Finance Software, Accounting Records, Spreadsheet Software, Data Quality, Data Maintenance, Financial Analysis
Beginner · Course · 1 - 4 Weeks
University of Illinois Urbana-Champaign
Skills you'll gain: Agile Methodology, Waterfall Methodology, Project Planning, Agile Project Management, Project Management Life Cycle, Communication Planning, Project Management, Sprint Planning, Scope Management, Project Estimation, Project Scoping, Project Schedules, Stakeholder Management, Risk Management, Work Breakdown Structure, Resource Management
Build toward a degree
Beginner · Course · 1 - 4 Weeks

Alex Genadinik
Skills you'll gain: Blockchain, Digital Assets, Emerging Technologies, Cryptography, FinTech, Payment Systems, Security Awareness
Mixed · Course · 1 - 3 Months

University of Colorado Boulder
Skills you'll gain: Power Electronics, Electrical Power, Electrical Engineering, Estimation, Simulations, Electronic Systems, Matlab, Engineering Calculations, Model Evaluation, Mathematical Modeling, Control Systems, Electronic Components, Applied Mathematics, Algorithms
Intermediate · Course · 1 - 3 Months

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

Alex Genadinik
Mixed · Course · 1 - 4 Weeks

University of Virginia
Skills you'll gain: Public History, Writing, Storytelling, Writing and Editing, World History, European History, Liberal Arts, Creativity
Beginner · Course · 1 - 3 Months