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.

École Polytechnique Fédérale de Lausanne
Skills you'll gain: Digital Communications, Communication Systems, Electrical and Computer Engineering, Programming Principles, Electronics, Telecommunications, Advanced Mathematics, Algorithms, Linear Algebra, Mathematical Modeling, Applied Mathematics
Intermediate · Course · 1 - 4 Weeks

Skills you'll gain: Immunology, Molecular Biology, Physiology, Cell Biology, Biology, Biochemistry
Intermediate · Course · 1 - 3 Months

University of California San Diego
Skills you'll gain: Data Processing, Data Manipulation, Data Visualization, Interactive Data Visualization, Web Scraping, Data Visualization Software, Pandas (Python Package), Data Science, Data Cleansing, Matplotlib, Data Import/Export, NumPy, Jupyter, JSON, Python Programming
Intermediate · Course · 1 - 3 Months

Digital Marketing Institute
Skills you'll gain: LinkedIn, Social Media Marketing, Social Media, Digital Advertising, Marketing, B2B Sales, Professional Networking, Advertising Campaigns, Social Media Strategy, Marketing Analytics, Video Production, Advertising, Selling Techniques, Branding, Content Creation, Target Audience
Beginner · Course · 1 - 4 Weeks

LearnKartS
Skills you'll gain: Business Risk Management, Stakeholder Management
Intermediate · Course · 1 - 4 Weeks

LearnKartS
Skills you'll gain: Force.com, Management Reporting, Data Maintenance, Security Controls
Intermediate · Course · 1 - 4 Weeks

Harvard Business Review
Skills you'll gain: Constructive Feedback, Talent Management, Employee Retention, Employee Coaching, Talent Acquisition, Workforce Development, Adaptability, Human Resources Management and Planning, Employee Engagement, Recruitment, Training and Development, Employee Performance Management, Coaching, Diversity and Inclusion, Professional Development, Interviewing Skills, Active Listening
Intermediate · Course · 1 - 4 Weeks

Skills you'll gain: Object Oriented Programming (OOP), C++ (Programming Language), Data Structures, Software Design Patterns, Programming Principles, File Management, Algorithms, Simulations
Advanced · Course · 1 - 4 Weeks

University of Illinois Urbana-Champaign
Skills you'll gain: Insurance, Insurance Policies, Risk Management, Wealth Management, Business Risk Management, Financial Planning, Economics, Risk Analysis, Finance, Human Capital, Trustworthiness, Case Studies, Innovation
Beginner · Course · 1 - 4 Weeks

Skills you'll gain: Remote Access Systems, Network Troubleshooting, Network Administration, Virtual Private Networks (VPN), Hardening, TCP/IP, Cybersecurity, Dynamic Host Configuration Protocol (DHCP), Human Factors (Security), Technical Support and Services, Encryption, Command-Line Interface, Authentications, Wireless Networks
Advanced · Course · 1 - 4 Weeks

University of Colorado Boulder
Skills you'll gain: Integral Calculus, Numerical Analysis, Calculus, Data Science, Mathematical Theory & Analysis, Applied Mathematics, Linear Algebra, Derivatives
Intermediate · Course · 1 - 4 Weeks

University of Michigan
Skills you'll gain: JSON, Data Processing, Web Scraping, Restful API, Data Manipulation, Application Programming Interface (API), Python Programming, Data Transformation, Data Structures, Data Collection
Intermediate · Course · 1 - 4 Weeks