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.

Johns Hopkins University
Skills you'll gain: Integral Calculus, Calculus, Geometry, Applied Mathematics, Numerical Analysis, Mechanics, Mathematical Modeling, Physics
★ 4.6 (28) · Intermediate · Course · 1 - 4 Weeks

The Hong Kong University of Science and Technology
Skills you'll gain: Research Design, Research Methodologies, Science and Research, Social Sciences, Surveys, Qualitative Research, Institutional Review Board (IRB), Survey Creation, Statistical Analysis, Data Collection, Higher Education, Correlation Analysis, Sample Size Determination, Ethical Standards And Conduct, Academic Advising, Probability & Statistics, Regression Analysis, Informed Consent
★ 4.7 (20) · Beginner · Course · 1 - 3 Months

Microsoft
Skills you'll gain: Video Game Development, Game Design, Program Development, Web Development Tools, Software Development, Computer Programming Tools, Software Development Tools, Development Environment, Software Documentation, Data Validation, Javascript, Debugging, Integrated Development Environments, Maintainability, Programming Principles, Data Structures, Code Reusability, Software Design, Computer Programming, Object Oriented Programming (OOP)
★ 4.2 (11) · Beginner · Course · 1 - 4 Weeks

University of Colorado Boulder
Skills you'll gain: Electrophysiology, Kinesiology, Exercise Science, Human Musculoskeletal System, Coordination, Exercise Therapy, Neurology, Sports Medicine, Physiology, Anatomy
★ 4.7 (12) · Intermediate · Course · 1 - 4 Weeks

Cinematic Health
Skills you'll gain: Patient Transfer Equipment, Vital Signs, Rehabilitation, Basic Nursing Skills, Patient Safety, Basic Patient Care, Activities of Daily Living (ADLs), Care Coordination, Patient Observation, Caregiving, Direct Patient Care, Treatment Planning, Toileting, Nursing Basics, Personal Care, Nursing Care, Nurse Education, Infection Control
★ 4.8 (16) · Beginner · Course · 1 - 3 Months

Skills you'll gain: Routing Protocols, Wide Area Networks, Network Security, Network Routing, Network Routers, Data Centers, Virtual Networking, TCP/IP, Open Shortest Path First (OSPF), Network Protocols, Network Switches, Virtual Machines, Network Administration, Virtual Local Area Network (VLAN), Virtualization, Virtual Private Networks (VPN), Wireless Networks, Network Troubleshooting, Network Architecture, Hardware Troubleshooting
★ 4.6 (14) · Beginner · Specialization · 3 - 6 Months

DeepLearning.AI
Skills you'll gain: Large Language Modeling, Model Evaluation, Model Training, Hugging Face, Data Preprocessing, Fine-tuning, Model Optimization, Transfer Learning, Generative AI
★ 4.5 (22) · Beginner · Project · Less Than 2 Hours

Skills you'll gain: Routing Protocols, TCP/IP, Network Switches, Network Routers, Virtual Local Area Network (VLAN), Network Protocols, Network Security, General Networking, Network Routing, Network Troubleshooting, Network Administration, Computer Networking, Open Shortest Path First (OSPF), Network Monitoring, Dynamic Host Configuration Protocol (DHCP), Local Area Networks, Network Planning And Design, Border Gateway Protocol, Network Performance Management, Proxy Servers
★ 4.8 (16) · Intermediate · Course · 1 - 3 Months

University of Colorado Boulder
Skills you'll gain: Product Planning, Target Market, Persona Development, Operational Performance Management, Target Audience, Market Opportunities, Systems Thinking, Business Modeling, Product Lifecycle Management, Customer Analysis, Operational Analysis, Entrepreneurship, Leadership and Management, Business Planning, Engineering Management, Market Analysis, People Management, New Product Development, Governance, Engineering
★ 4.7 (15) · Beginner · Course · 1 - 3 Months

Skills you'll gain: Responsive Web Design, HTML and CSS, Web Design, Web Design and Development, Cascading Style Sheets (CSS), Front-End Web Development, Application Deployment
★ 4.7 (22) · Intermediate · Course · 1 - 4 Weeks

Edureka
Skills you'll gain: Angular, TypeScript, JavaScript Frameworks, UI Components, Bootstrap (Front-End Framework), Application Frameworks, Code Reusability, Web Development Tools, Web Applications, Front-End Web Development, Software Architecture, Application Development, Command-Line Interface, Development Environment, Cascading Style Sheets (CSS)
★ 4.2 (14) · Beginner · Course · 1 - 4 Weeks

Whizlabs
Skills you'll gain: Amazon S3, Amazon Web Services, Cloud Storage, Data Storage, Data Storage Technologies, Amazon Elastic Compute Cloud, AWS Identity and Access Management (IAM), Cloud Security, Security Controls, File Management, File Systems, Key Management, Encryption
★ 4.8 (13) · Intermediate · Course · 1 - 4 Weeks