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.

GitLab
Skills you'll gain: Telecommuting, Virtual Teams, Team Management, Human Resources Management and Planning, Culture Transformation, Performance Metric, Leadership and Management, Organizational Change, Organizational Strategy, Business Transformation, Organizational Leadership, Team Building, Performance Management, Adaptability, Collaboration, Business Strategy, Communication
Intermediate · Course · 1 - 3 Months

Johns Hopkins University
Skills you'll gain: Bioinformatics, Unix Commands, Biostatistics, Exploratory Data Analysis, Statistical Analysis, Unix, Data Science, Data Management, Statistical Methods, Command-Line Interface, Statistical Hypothesis Testing, Linux Commands, Data Analysis Software, Data Quality, Data Structures, Data Analysis, Computer Science, Molecular Biology, R Programming, Python Programming
Intermediate · Specialization · 3 - 6 Months

SAE Institute México
Skills you'll gain: Automation, Instrumental Music, Music, Music Performance
Beginner · Course · 1 - 4 Weeks

Columbia University
Skills you'll gain: Project Schedules, Construction Management, Construction Estimating, Project Finance, Cost Estimation, Punch Work, Construction, Project Risk Management, Bidding, Building Information Modeling, Scheduling, Cost Control, Environment Health And Safety, Project Closure, Lean Methodologies, Timelines, Real Estate, Finance, Business Transformation, Innovation
Beginner · Specialization · 3 - 6 Months

Skills you'll gain: Flask (Web Framework), Restful API, Software Testing, Databases, Software Quality (SQA/SQC), JSON, Application Programming Interface (API), MongoDB, Full-Stack Web Development, Web Applications, NoSQL, Back-End Web Development, Python Programming, Maintainability, Application Deployment, Data Validation, Authentications
Beginner · Course · 1 - 3 Months

Alex Genadinik
Skills you'll gain: Google Analytics, Web Analytics, Content Performance Analysis, Performance Metric, Responsive Web Design
Mixed · Course · 1 - 3 Months

Skills you'll gain: Content Performance Analysis, Dashboard, Surveys, Newsletters, Search Engine Optimization, Marketing Budgets, Email Automation, Marketing Analytics, Marketing Automation, Marketing Planning, Spreadsheet Software, Web Analytics, Email Marketing, Content Marketing, Performance Reporting, Social Media Management, Google Analytics, Collaborative Software, Lead Generation, Pivot Tables And Charts
Beginner · Specialization · 3 - 6 Months
Skills you'll gain: Electronic Components, Schematic Diagrams, Prototyping, Hardware Design, Electronics, Engineering Design Process, Technical Design, Electronics Engineering, Electronic Systems, Manufacturing Standards, Technical Standard, Engineering Documentation, Workflow Management, Data Visualization, Verification And Validation
Intermediate · Course · 1 - 4 Weeks

Niel Asher Education
Skills you'll gain: Rehabilitation, Manual Therapy, Exercise Therapy, Physical Therapy, Clinical Practices, Patient Evaluation, Adaptive Equipment, Mindfulness, Sports Medicine, Health And Wellness Coaching, Occupational Therapy, Occupational Safety And Health, Health Education, Health Promotion, Mental Health Therapies, Mental and Behavioral Health, Health Care, Mental Health, Mental and Behavioral Health Specialties, Mental Health Diseases and Disorders
Beginner · Specialization · 3 - 6 Months

Skills you'll gain: Incident Response, Computer Security Incident Management, Security Management, Incident Management, Cyber Risk, Regulatory Compliance, Compliance Management, Information Systems Security, Cyber Security Strategy, Cybersecurity, Enterprise Security, Federal Information Security Management Act, Law, Regulation, and Compliance, Regulation and Legal Compliance, Payment Card Industry (PCI) Data Security Standards, Computer Security, Health Insurance Portability And Accountability Act (HIPAA) Compliance, Network Security, Sarbanes Oxley Act (SOX) Compliance, General Data Protection Regulation (GDPR)
Mixed · Course · 1 - 3 Months

University of Pennsylvania
Skills you'll gain: Business Modeling, Mathematical Modeling, Regression Analysis, Statistical Modeling, Risk Analysis, Forecasting, Predictive Analytics, Business Analytics, Simulation and Simulation Software, Probability, Logistic Regression, Vocabulary
Mixed · Course · 1 - 4 Weeks

Indian Institute of Science
Skills you'll gain: Electronics Engineering, Semiconductors, Electronics, Electronic Hardware, Biomedical Technology, Hardware Design, Embedded Software, Materials science, Chemical and Biomedical Engineering, Mechanical Design, Manufacturing Processes, Communication Systems, Laboratory Equipment, Engineering Design Process, Laboratory Testing, Analytical Testing
Beginner · Course · 1 - 3 Months