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 California, Irvine
Skills you'll gain: Core Data (Software), Apple iOS, iOS Development, JSON, Objective-C (Programming Language), OAuth, Authentications, Mobile Development, Single Sign-On (SSO), Secure Coding, Data Store, Cryptographic Protocols, Application Security, Data Persistence
Mixed · Course · 1 - 4 Weeks

Coursera
Skills you'll gain: Cryptography, Encryption, Application Development, Security Engineering, Application Security, C++ (Programming Language)
Intermediate · Guided Project · Less Than 2 Hours

Johns Hopkins University
Skills you'll gain: Email Security, Mobile Security, Network Security, Open Web Application Security Project (OWASP), Threat Detection, TCP/IP, Network Analysis, Network Protocols, Cybersecurity, Application Security, Exploitation techniques, Wireless Networks, Splunk, Information Privacy
Intermediate · Course · 1 - 3 Months
University of Illinois Urbana-Champaign
Skills you'll gain: Statistical Hypothesis Testing, Statistical Inference, Business Analytics, Statistical Analysis, Analytics, Microsoft Excel, Statistical Modeling, Probability & Statistics, Statistical Methods, Predictive Analytics, Data-Driven Decision-Making, Regression Analysis
Intermediate · Course · 1 - 4 Weeks

Princeton University
Skills you'll gain: Theoretical Computer Science, Data Structures, Computer Science, Computer Architecture, Algorithms, Programming Principles, Computational Logic, Java Programming, Computer Hardware, Scalability
Intermediate · Course · 1 - 3 Months

New York Institute of Finance
Skills you'll gain: Working Capital, Supplier Management, Supply Chain Management, Blockchain, FinTech, Supply Chain Systems, Supply Chain, Cash Flows, Cash Management, Customer Analysis, Financial Market, Market Opportunities, Market Trend, Transaction Processing, Market Dynamics, Market Analysis, Stakeholder Analysis, Risk Modeling, Commercial Banking, Emerging Technologies
Intermediate · Specialization · 3 - 6 Months

Johns Hopkins University
Skills you'll gain: Medical Privacy, Health Insurance Portability And Accountability Act (HIPAA) Compliance, Health Information Management, Security Awareness, Personally Identifiable Information, Encryption, Health Care, Health Care Procedure and Regulation, Data Security, Cyber Attacks, Medical Records, Information Privacy, Cloud Computing, Patient Safety
Beginner · Course · 1 - 4 Weeks

University of Illinois Urbana-Champaign
Skills you'll gain: Insurance, Portfolio Risk, Supply And Demand, Insurance Policies, Risk Management, Investments, Wealth Management, Risk Management Framework, Portfolio Management, Market Dynamics, Financial Planning, Investment Management, Finance, Economics, Asset Management, Financial Management, Economic Development, Behavioral Economics, Cost Benefit Analysis, Business Economics
Beginner · Specialization · 1 - 3 Months

Northwestern University
Skills you'll gain: Music Theory, Music, Instrumental Music, Music Performance, Classical Music, Lecturing, Coordination
Mixed · Course · 1 - 3 Months

University of Maryland, College Park
Skills you'll gain: Data Collection, Survey Creation, Research Design, Data Quality, Data Analysis, Data Validation, Sampling (Statistics), Data Management, Big Data, Statistical Methods
Intermediate · Course · 1 - 4 Weeks

Real Madrid Graduate School Universidad Europea
Skills you'll gain: Physical Stamina, Sports Medicine, Nutrition and Diet, Exercise Science, Nutritional Assessment, Nutrition Education, Clinical Nutrition, Athletic Training, Kinesiology, Performance Analysis, Physiology, Hydrology, Meal Planning And Preparation, Stress Management, Planning, Performance Reporting, Load Balancing, Coordination, Leadership, Health Technology
Beginner · Course · 1 - 4 Weeks

Skills you'll gain: Medical Privacy, Information Privacy, Health Insurance Portability And Accountability Act (HIPAA) Compliance, Personally Identifiable Information, Law, Regulation, and Compliance, Health Information Management, General Data Protection Regulation (GDPR), Regulatory Compliance, Health Care Procedure and Regulation
Mixed · Course · 1 - 4 Weeks