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.

Dartmouth College
Skills you'll gain: Embedded Software, C (Programming Language), Linux, Embedded Systems, Build Tools, Command-Line Interface, Operating Systems, Program Development, Software Installation, Application Development, File Systems, Computer Programming, Debugging
Beginner · Course · 1 - 3 Months

Skills you'll gain: Unreal Engine, Video Game Development, Game Design, Animation and Game Design, Scripting, Virtual Environment, Event-Driven Programming
Mixed · Course · 1 - 4 Weeks

University of Colorado Boulder
Skills you'll gain: Mental Health, Mindfulness, Community Health, Social Justice, Health Equity, Stress Management, Public Health, Infectious Diseases, Media and Communications, Social Sciences, Liberal Arts, Learning Strategies, Biology, Health Care, Student Engagement
Beginner · Course · 1 - 4 Weeks

University of California, Irvine
Skills you'll gain: Smart Goals, Goal Setting, Interviewing Skills, Workforce Development, Negotiation, Professional Development, Planning, Compensation and Benefits, Technical Consulting, Communication
Beginner · Course · 1 - 4 Weeks

Duke University
Skills you'll gain: Rust (Programming Language), Serverless Computing, Command-Line Interface, Maintainability, Amazon Web Services, Linux Commands, Unix Commands, Application Deployment, Software Development Tools, Program Development, System Programming, Python Programming, Performance Tuning, Debugging, Software Testing
Intermediate · Course · 1 - 4 Weeks

Board Infinity
Skills you'll gain: Organizational Development, Talent Recruitment, Virtual Teams, Human Resources Information System (HRIS), Workforce Development, Organizational Change
Intermediate · Course · 1 - 4 Weeks

Skills you'll gain: JavaScript Frameworks, Web Development Tools, Test Automation, Software Testing, Network Performance Management, Restful API
Advanced · Guided Project · Less Than 2 Hours

Skills you'll gain: Sales Pipelines, Customer Relationship Management (CRM) Software, Lead Generation, Sales Process, Sales Management, Customer Retention, Sales Strategy, Prospecting and Qualification, Process Optimization, Customer Engagement
Beginner · Course · 1 - 4 Weeks

University of Colorado Boulder
Skills you'll gain: Open Web Application Security Project (OWASP), Cyber Security Assessment, Exploitation techniques, Server Side, Application Security, Artificial Intelligence and Machine Learning (AI/ML), Vulnerability Scanning, Responsible AI, Data Security, Cyber Attacks, Security Awareness, Generative AI, Large Language Modeling, Personally Identifiable Information, Business Logic
Build toward a degree
Advanced · Course · 1 - 4 Weeks

Simplilearn
Skills you'll gain: Data Analysis Expressions (DAX), Microsoft Excel, Excel Formulas, Pivot Tables And Charts, Dashboard, Data Processing, Data Presentation, Data Transformation, Data Analysis, Data Visualization, Barcoding, Microsoft PowerPoint, Data Import/Export
Beginner · Course · 1 - 4 Weeks

Skills you'll gain: Data Storytelling, Media Planning, Social Media Marketing, Google Ads, Email Marketing, Social Media Strategy, Order Fulfillment, Social Media Management, Search Engine Optimization, Performance Measurement, Spreadsheet Software, A/B Testing, Digital Marketing, E-Commerce, Campaign Management, Loyalty Programs, Customer Retention, Marketing, Interviewing Skills, Professional Development
Build toward a degree
Beginner · Professional Certificate · 3 - 6 Months

Simplilearn
Skills you'll gain: Supervised Learning, Data Modeling, Unsupervised Learning, Applied Machine Learning, Data Analysis, Reinforcement Learning, Artificial Intelligence, Classification And Regression Tree (CART), Tensorflow, Machine Learning Algorithms, Keras (Neural Network Library), Artificial Neural Networks, Deep Learning, Predictive Modeling, Machine Learning, Regression Analysis, Data Ethics, Responsible AI, Artificial Intelligence and Machine Learning (AI/ML), Random Forest Algorithm
Beginner · Specialization · 1 - 3 Months