First aid courses can help you learn how to recognize common emergencies, understand basic response principles, and communicate effectively with trained professionals. You can build skills in identifying signs of illness or injury, assessing situations safely, and applying general preparedness concepts. Many courses introduce frameworks, scenario-based learning, and tools that support building confidence in responding to unexpected events.

Skills you'll gain: Figma (Design Software), Usability Testing, Responsive Web Design, User Interface (UI), Journey Mapping, Interactive Design, User Experience Design, Usability, Wireframing, User Interface (UI) Design, Prototyping, User Experience, User Flows, Design Research, Front-End Web Development, Web Design and Development, Design Strategies, Mockups, User Interface and User Experience (UI/UX) Design, Interaction Design
★ 4.4 (423) · Intermediate · Specialization · 3 - 6 Months

University of Illinois Urbana-Champaign
Skills you'll gain: Internet Of Things, Embedded Software, Security Controls, Wireless Networks, Network Protocols, Infrastructure Security, Emerging Technologies, Data Science, Embedded Systems, Network Infrastructure, General Networking, Network Planning And Design, Amazon Web Services, Middleware, Communication Systems, Health Technology, Cloud Platforms, Digital Communications, Hardware Architecture, Computing Platforms
★ 4.7 (531) · Intermediate · Course · 1 - 4 Weeks

University of Colorado System
Skills you'll gain: Routing Protocols, Network Routing, Open Shortest Path First (OSPF), TCP/IP, Network Routers, Network Protocols, Network Architecture, Network Switches, Virtual Networking, Network Performance Management, Computer Networking, OSI Models, Local Area Networks, Graph Theory, Algorithms
★ 4.7 (455) · Intermediate · Course · 1 - 3 Months

University of Colorado Boulder
Skills you'll gain: Model Optimization, Performance Tuning, Systems Design, Design Software, Engineering Calculations, Engineering Analysis, Technical Design, Engineering, Scientific, and Technical Instruments, System Design and Implementation, Systems Analysis, Numerical Analysis, Image Analysis, Simulation and Simulation Software, Image Quality, Medical Imaging, Graphical Tools, Physics
★ 4.3 (342) · Advanced · Course · 1 - 3 Months

LearnQuest
Skills you'll gain: Oracle Databases, Database Design, Database Theory, Database Management Systems, Database Systems, Relational Databases, Databases, Database Architecture and Administration, Database Management, Data Storage Technologies, Data Storage, Transaction Processing, Data Modeling, Diagram Design
★ 4.6 (481) · Beginner · Course · 1 - 3 Months

Skills you'll gain: Scaled Agile Framework, Agile Software Development, Agile Methodology, Behavior-Driven Development, Agile Product Development, Test Driven Development (TDD), Scalability, Agile Project Management, Sprint Planning, Solution Delivery, Virtualization and Virtual Machines, Integration Testing, Software Testing, Virtualization, Solution Architecture
★ 4.5 (492) · Beginner · Course · 1 - 4 Weeks

Yonsei University
Skills you'll gain: Hospitality Management, Hospitality and Food Services, Hospitality, Customer Service, Guest Relations, Customer experience strategy (CX), Customer Relationship Management, Service Design, Healthcare Industry Knowledge, Expectation Management, Product Marketing, Service Management, Innovation, Customer experience improvement, Revenue Management, Business Marketing, Service Improvement, Hospital Experience, Marketing, Patient-centered Care
★ 4.7 (557) · Mixed · Course · 1 - 4 Weeks

École normale supérieure
Skills you'll gain: Theoretical Computer Science, Combinatorics, Algorithms, Graph Theory, Operations Research, Linear Algebra, Applied Mathematics, Mathematical Modeling, Solution Design, Probability
★ 4.7 (558) · Mixed · Course · 1 - 3 Months

Skills you'll gain: MITRE ATT&CK Framework, Cybersecurity, Cyber Operations, Exploitation techniques, IT Automation, Scripting, Python Programming, Scripting Languages
★ 4.5 (434) · Intermediate · Course · 1 - 4 Weeks

Fundação Instituto de Administração
Skills you'll gain: International Finance, Business Economics, Economics, Financial Policy, Economic Development, Fiscal Management, Market Dynamics, Business Planning, Investments
★ 4.8 (469) · Beginner · Course · 1 - 4 Weeks

The World Bank Group
Skills you'll gain: Climate Change Programs, Climate Change Adaptation, Climate Change Mitigation, Interactive Learning, Sustainable Development, Social Impact, Mitigation, Environment, Environmental Policy, Natural Resource Management, Water Resources, Environmental Science, Water Resource Management, Policy Analysis, Cooperation, Policy Development
★ 4.7 (480) · Beginner · Course · 1 - 4 Weeks

University of Geneva
Skills you'll gain: Precision Medicine, Medical Science and Research, Data Ethics, Healthcare Ethics, Pharmacology, Health Informatics, Bioinformatics, Clinical Research, Biomedical Technology, Primary Care, Biotechnology, Clinical Research Ethics, General Medicine, Oncology, Pharmaceuticals, Health Policy, Pharmacotherapy, Molecular Biology, Diagnostic Tests, Patient Education And Counseling
★ 4.5 (419) · Intermediate · Course · 1 - 3 Months