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.

Johns Hopkins University
Skills you'll gain: Generative Adversarial Networks (GANs), AI Security, Generative AI, Fraud detection, Model Evaluation, Feature Engineering, Cybersecurity, Cyber Security Strategy, Data Preprocessing, Anomaly Detection, Security Testing, Applied Machine Learning, Reinforcement Learning, Performance Tuning
Intermediate · Course · 1 - 3 Months

Board Infinity
Skills you'll gain: Docker (Software), Azure DevOps, Restful API, Microservices, Containerization, DevOps, ASP.NET, CI/CD, .NET Framework, API Design, Test Automation, Application Deployment, Git (Version Control System)
Advanced · Course · 1 - 4 Weeks

Skills you'll gain: Probability, Linear Algebra, Probability & Statistics, Statistics, Mathematical Theory & Analysis, Computational Logic, Applied Mathematics, Advanced Mathematics, Computer Science, Algebra, Physics
Beginner · Course · 1 - 4 Weeks

The George Washington University
Skills you'll gain: Law, Regulation, and Compliance, Health Equity, Informed Consent, Pharmaceuticals, Health Care Procedure and Regulation, Healthcare Ethics, Public Health and Disease Prevention, Health Disparities, Regulatory Compliance, Public Health, Health Policy, Advocacy, Policy Analysis, Intellectual Property, Patient Education And Counseling
Mixed · Course · 1 - 3 Months

Johns Hopkins University
Skills you'll gain: Algebra, Graphing, Advanced Mathematics, Logical Reasoning, General Mathematics, Mathematical Theory & Analysis, Applied Mathematics, Mathematical Modeling, Visualization (Computer Graphics), Correlation Analysis
Beginner · Course · 1 - 4 Weeks

Simplilearn
Skills you'll gain: Marketing Analytics, Web Analytics, Google Analytics, Key Performance Indicators (KPIs), Marketing Effectiveness, Performance Measurement, Business Metrics, Performance Metric, Marketing Strategies, Digital Marketing, Data-Driven Decision-Making, Return On Investment, Analytics, Heat Maps, Customer Engagement
Beginner · Course · 1 - 4 Weeks

Tsinghua University
Skills you'll gain: Cultural Diversity, Culture, English Language, Literacy, Writing, Interpersonal Communications, Grammar, Vocabulary
Intermediate · Course · 1 - 3 Months

Board Infinity
Skills you'll gain: Test Planning, Test Tools, Configuration Management, Software Testing, Test Automation, Integration Testing, System Testing, Acceptance Testing, Software Quality Assurance, Test Data, Risk Management, Test Case, Risk Management Framework, Issue Tracking, Performance Testing, Version Control
Beginner · Course · 1 - 4 Weeks

Skills you'll gain: Software Development
Beginner · Course · 1 - 4 Weeks

Alex Genadinik
Skills you'll gain: Return On Investment, Investments, Payment Systems, Transaction Processing, Income Tax, Digital Assets, FinTech, Business-To-Consumer, E-Commerce
Mixed · Course · 1 - 4 Weeks

Skills you'll gain: Apple iOS, Open Web Application Security Project (OWASP), Swift Programming, Mobile Security, Mobile Development, Secure Coding, IT Security Architecture, Application Security, Data Validation, Vulnerability Assessments, Cryptography, Application Programming Interface (API), JSON
Intermediate · Course · 1 - 4 Weeks

Skills you'll gain: Google Cloud Platform, Amazon Web Services, AWS Identity and Access Management (IAM), Virtual Private Networks (VPN), Identity and Access Management, Cloud Infrastructure, Cloud Computing Architecture, Cloud Computing, Virtual Networking, Network Routing, Network Security, Wide Area Networks, User Accounts, Load Balancing
Intermediate · Course · 1 - 4 Weeks