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.

Harvard Business Review
Skills you'll gain: Conflict Management, Constructive Feedback, Team Leadership, Team Building, Negotiation, Coaching, Trustworthiness, Performance Management, Relationship Building, Collaboration, Empathy, Active Listening, Communication
Intermediate · Course · 1 - 4 Weeks

University of Pennsylvania
Skills you'll gain: File I/O, Matplotlib, Object Oriented Design, Java, Object Oriented Programming (OOP), Data Analysis, Unit Testing, Pandas (Python Package), Java Programming, Eclipse (Software), Application Development, Data Visualization, Data Structures, Data Science, Data Cleansing, Debugging, Pivot Tables And Charts, Programming Principles, Python Programming, Computer Programming
Beginner · Specialization · 3 - 6 Months

National Academy of Sports Medicine
Skills you'll gain: Nutritional Assessment, Meal Planning And Preparation, Nutrition and Diet, Nutrition Education, Pharmacology, Exercise Science, Critical Thinking, Sports Medicine, Drug Interaction, Food Quality Assurance And Control, Physiology, Decision Making, Health Promotion, Health And Wellness Coaching, Regulatory Compliance, General Science and Research, Overcoming Obstacles
Intermediate · Specialization · 1 - 4 Weeks

Skills you'll gain: 3D Modeling, 3D Assets, Computer Graphics, Virtual Environment, Visualization (Computer Graphics), Architectural Design, Performance Tuning, Building Design, Frontend Performance, Structural Engineering, Image Quality, Aesthetics
Intermediate · Specialization · 3 - 6 Months

Skills you'll gain: SQL, Database Management, MySQL, Relational Databases, Query Languages, Databases, Database Application, Database Design, Data Access, Java, Java Programming, UI Components, User Interface (UI), Software Development
Beginner · Course · 1 - 4 Weeks

University of Colorado Boulder
Skills you'll gain: Physics, Physical Science, Materials science, Chemistry, Mechanics, Mathematical Modeling, Computational Thinking, Simulations, Applied Mathematics
Beginner · Course · 1 - 4 Weeks

Skills you'll gain: Programmable Logic Controllers, Animations, Human Machine Interfaces, Control Systems, Real-Time Operating Systems, Visualization (Computer Graphics), Control Panels, Test Tools, Interactive Design, Automation Engineering, Program Development, Automation, Simulations, System Monitoring, Electrical Wiring, Computational Logic, Simulation and Simulation Software, User Interface (UI) Design, Network Troubleshooting, User Feedback
Intermediate · Specialization · 3 - 6 Months

Skills you'll gain: Data Analysis Expressions (DAX), Real Time Data, Dataflow, Extract, Transform, Load, Business Intelligence
Beginner · Course · 1 - 3 Months

Skills you'll gain: Data Structures, Algorithms, Computer Programming, Computational Thinking, Theoretical Computer Science, Performance Tuning
Intermediate · Course · 1 - 3 Months

Skills you'll gain: Email Automation, Business Process Automation, Automation, Project Management Software, Workflow Management, Process Design, Issue Tracking, Project Management, Project Planning
Intermediate · Guided Project · Less Than 2 Hours

Interactive Brokers
Skills you'll gain: Real Estate, Risk Management, Property and Real Estate, Financial Analysis, Financial Acumen, Return On Investment, Economics, Construction Accounting, Market Dynamics, Investment Management, Market Data, Mortgage Loans, Investments, Market Trend, Market Analysis
Beginner · Course · 1 - 4 Weeks

Northeastern University
Skills you'll gain: Software Quality Assurance, Test Automation, Software Testing, Browser Compatibility, Agile Methodology, Selenium (Software), Performance Testing, Software Development Life Cycle, Application Security, DevOps, Scaled Agile Framework, Mobile Development Tools, DevSecOps, Waterfall Methodology, CI/CD, Cybersecurity
Intermediate · Course · 1 - 3 Months