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 Colorado System
Skills you'll gain: Intrusion Detection and Prevention, Threat Detection, Incident Response, Computer Security Incident Management, Cybersecurity, Threat Management, Data Security, Cyber Attacks, Endpoint Security, Network Security, Cyber Security Assessment, Firewall
Beginner · Course · 1 - 3 Months

Skills you'll gain: Music Theory, Musical Composition, Music, Instrumental Music, Music Performance, Creativity
Intermediate · Course · 1 - 4 Weeks

Skills you'll gain: Extract, Transform, Load, Apache Airflow, Data Pipelines, Apache Kafka, Data Warehousing, Data Transformation, Data Migration, Web Scraping, Data Integration, Shell Script, Data Processing, Data Mart, Unix Shell, Big Data, Performance Tuning, Scalability
Intermediate · Course · 1 - 3 Months

University of Colorado Boulder
Skills you'll gain: Power Electronics, Control Systems, Electric Power Systems, Electronics Engineering, Electrical Engineering, Electronics, Simulations, Mathematical Modeling
Build toward a degree
Intermediate · Course · 1 - 4 Weeks

University of Michigan
Skills you'll gain: Goal Setting, Team Motivation, Visionary, Smart Goals, Team Performance Management, Verbal Communication Skills, Employee Engagement, Constructive Feedback, Employee Performance Management, Communication, Drive Engagement, Leadership, Cultural Diversity, Leadership Development, People Development, Influencing, Non-Verbal Communication, Compensation Strategy, Industrial and Organizational Psychology
Beginner · Course · 1 - 3 Months

University of California, Irvine
Skills you'll gain: Grammar, English Language, Language Learning, Writing, Vocabulary
Intermediate · Course · 1 - 3 Months

Coursera
Skills you'll gain: Patient Education And Counseling, Communication Strategies, Communication, Active Listening, Empathy
Beginner · Course · 1 - 4 Weeks

University of Illinois Urbana-Champaign
Skills you'll gain: Case Management
Beginner · Specialization · 3 - 6 Months

University of Colorado System
Skills you'll gain: Penetration Testing, Application Security, Secure Coding, Exploitation techniques, Software Design Patterns, Vulnerability Assessments, Amazon Web Services, SQL, Operating Systems, C (Programming Language)
Intermediate · Course · 1 - 4 Weeks
Khalifa University
Skills you'll gain: Environmental Management Systems, Environment Health And Safety, Environmental Monitoring, Environmental Regulations, Hazardous Waste Operations And Emergency Response Standard (HAZWOPER), Environmental Engineering, Environmental Science, Emergency Response, Regulatory Compliance, Hazard Analysis, Sustainability Standards, Risk Management, Waste Minimization
Beginner · Course · 1 - 4 Weeks

Johns Hopkins University
Skills you'll gain: Data Analysis, Applied Mathematics, Mathematical Modeling, Graphing, Trigonometry, R (Software), Analytical Skills, General Mathematics, Statistics, Algebra, Systems Of Measurement, Correlation Analysis, Regression Analysis, Calculus, Geometry
Beginner · Specialization · 3 - 6 Months

Northwestern University
Skills you'll gain: World History, Socioeconomics, Cultural Diversity, Social Justice, European History, Social Impact, Political Sciences
Mixed · Course · 1 - 3 Months