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: Linear Algebra, Algebra, Applied Mathematics, Advanced Mathematics, Artificial Intelligence and Machine Learning (AI/ML), Mathematical Modeling, Engineering Analysis, Mathematical Theory & Analysis, Numerical Analysis, Geometry, Data Transformation, Applied Machine Learning, Dimensionality Reduction, Markov Model, Probability
Beginner · Specialization · 3 - 6 Months

Coursera
Skills you'll gain: R (Software), Data Import/Export, Package and Software Management, R Programming, Data Structures, Data-oriented programming, Statistical Programming, Data Analysis Software, Data Analysis, Data Science
Beginner · Guided Project · Less Than 2 Hours

Board Infinity
Skills you'll gain: Angular, HTML and CSS, Front-End Web Development, Javascript, Software Design Patterns, Web Components, Web Applications, Cascading Style Sheets (CSS), Web Development, TypeScript, Responsive Web Design
Intermediate · Course · 1 - 4 Weeks

University of Colorado Boulder
Skills you'll gain: Embedded Software, Embedded Systems, Electronics Engineering, Electronic Systems, Electronic Hardware, Electronics, Machine Controls, Control Systems, Electrical Systems, Hardware Design, Programmable Logic Controllers, Equipment Design, Electronic Components
Build toward a degree
Intermediate · Course · 1 - 3 Months

Yale University
Skills you'll gain: Legal Research, Case Law, Legal Proceedings, Commercial Laws, Legal Risk, Contract Review, Lawsuits, Arbitration, Contract Compliance, Case Studies, Mitigation
Beginner · Course · 1 - 3 Months

Coursera
Skills you'll gain: Applied Machine Learning, Jupyter, Machine Learning Algorithms, Model Evaluation, Machine Learning, Predictive Modeling, Data Science, Python Programming, Predictive Analytics, Data Analysis, Technical Communication
Intermediate · Guided Project · Less Than 2 Hours

University of California San Diego
Skills you'll gain: Bioinformatics, Molecular Biology, Computational Thinking, Computer Programming Tools, Graph Theory, Mathematical Modeling, Python Programming, Biology
Intermediate · Course · 1 - 3 Months

Tel Aviv University
Skills you'll gain: Social Justice, Economics, Policy, and Social Studies, Socioeconomics, Tax, Economics, Sustainable Development, Ethical Standards And Conduct, Policy Analysis, Technology Strategies
Mixed · Course · 1 - 4 Weeks

Skills you'll gain: Patch Management, Microsoft Azure, Cloud Management, Identity and Access Management, Cloud Infrastructure, Cloud Computing, Cloud Computing Architecture, Infrastructure As A Service (IaaS), Cloud Services, Cloud Deployment, Disaster Recovery, Virtual Machines, Kubernetes, Cloud Platforms, Role-Based Access Control (RBAC), Virtual Networking, Windows PowerShell, System Monitoring, Infrastructure as Code (IaC), Load Balancing
Beginner · Specialization · 3 - 6 Months

The Hong Kong University of Science and Technology
Skills you'll gain: Physics, Thermal Management, Calculus, Mechanics, Advanced Mathematics, Mathematical Modeling
Beginner · Course · 1 - 3 Months

Johns Hopkins University
Skills you'll gain: Architectural Design, Sustainable Development, Building Codes, Community Development, Land Development, Sustainable Architecture, Building Design, Sustainable Design, Sustainable Technologies, Construction, Climate Change Mitigation, Disabilities, Traffic Flow Optimization, Environmental Policy, Environmental Engineering, Policy Analysis, Case Studies
Intermediate · Course · 1 - 4 Weeks

Skills you'll gain: Clinical Nursing, Basic Nursing Skills, Patient Observation, Patient-centered Care, Nursing Care, Infection Control, Patient Evaluation, Patient Communication, Emergency Response, Nursing Process, Clinical Assessment, Medical Emergency, Nursing, Nursing Practices, Health Assessment, Communication, Medical Equipment and Technology, Health Care, Healthcare Ethics, Anatomy
Beginner · Course · 1 - 4 Weeks