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 Arizona
Skills you'll gain: Ancient History, Physics, Mechanics, Physical Science, Science and Research, World History, Research, Scientific Methods, Chemistry, Biology
Beginner · Course · 1 - 3 Months

Imperial College London
Skills you'll gain: Immunology, Infectious Diseases, Hematology, Physiology, Oncology, Microbiology, Molecular, Cellular, and Microbiology, Epidemiology, Internal Medicine, Chronic Diseases, Public Health and Disease Prevention, Geriatrics, Pathology, Pulmonology, Environment, Pharmacotherapy, Biology, Public Health, Molecular Biology, Cell Biology
Intermediate · Specialization · 3 - 6 Months

LearnKartS
Skills you'll gain: Microservices, Network Monitoring
Intermediate · Course · 1 - 4 Weeks

Skills you'll gain: Network Security, Disaster Recovery, General Networking, Network Administration, Authentications, Network Architecture, Vulnerability Assessments, Computer Networking, Network Infrastructure, Wireless Networks, Cybersecurity, Network Monitoring, Local Area Networks, Network Performance Management, Telecommunications, Network Protocols, Network Troubleshooting, OSI Models, Network Switches, Event Monitoring
Intermediate · Course · 1 - 4 Weeks

Skills you'll gain: Selenium (Software), Test Script Development, Test Automation, Test Case, Software Testing, Cascading Style Sheets (CSS), Application Frameworks, Browser Compatibility, Javascript and jQuery, Web Scraping, Automation, Python Programming, Hypertext Markup Language (HTML)
Intermediate · Course · 1 - 3 Months

University of Colorado System
Skills you'll gain: Cryptography, Data Integrity, Encryption, Authentications, Information Assurance, Data Security, Public Key Cryptography Standards (PKCS)
Intermediate · Course · 1 - 4 Weeks

Skills you'll gain: Application Deployment, React Redux, Full-Stack Web Development, React.js, Authentications, Node.JS, Front-End Web Development, Authorization (Computing), User Accounts, User Interface (UI), GitHub, Command-Line Interface
Advanced · Course · 1 - 3 Months

Whizlabs
Skills you'll gain: Amazon CloudWatch, Amazon Web Services, System Monitoring, Event Monitoring, Network Monitoring, AWS Identity and Access Management (IAM), Continuous Monitoring, Application Performance Management, Amazon Elastic Compute Cloud, Cloud Computing, Load Balancing
Beginner · Course · 1 - 4 Weeks

California Institute of the Arts
Skills you'll gain: Adobe Premiere, Video Editing, Cinematography, Video Production, Videography, Editing, Storytelling, Timelines, Creativity
Beginner · Course · 1 - 3 Months

Logical Operations
Skills you'll gain: Data Analysis Expressions (DAX), Microsoft Excel, Pivot Tables And Charts, Report Writing, Data Modeling, Management Reporting, Business Reporting, Data Analysis, Performance Reporting, Data Presentation, Data Visualization Software, Data Visualization, Microsoft Office, Microsoft 365, Productivity Software
Mixed · Course · 1 - 4 Weeks

University of Colorado Boulder
Skills you'll gain: Operations Research, Algorithms, Graph Theory, Linear Algebra, Combinatorics, Computational Thinking, Mathematical Modeling, Theoretical Computer Science, Python Programming
Build toward a degree
Advanced · Course · 1 - 4 Weeks

University of Pennsylvania
Skills you'll gain: Portfolio Management, Financial Modeling, Presentations, Microsoft PowerPoint, Investment Management, Business Modeling, Data Modeling, Quantitative Research, Business Analytics, Financial Data, Portfolio Risk, Microsoft Excel, Financial Analysis, Regression Analysis
Mixed · Course · 1 - 3 Months