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: Image Analysis, Scalability, Digital Signal Processing, C and C++, Distributed Computing, Computer Graphics, Data Processing, Performance Tuning, Hardware Architecture, Algorithms
Intermediate · Course · 1 - 3 Months

LearnKartS
Skills you'll gain: Apache Kafka, Server Administration
Intermediate · Course · 1 - 4 Weeks

Skills you'll gain: Information Systems Security, Risk Management, Continuous Monitoring, Information Assurance, Cyber Governance, Governance, Cybersecurity, Security Controls, Business Risk Management, ISO/IEC 27001, Threat Modeling, Risk Analysis, Threat Management, Vulnerability Assessments, Regulatory Compliance, System Monitoring, Information Systems, Asset Management, Intellectual Property
Advanced · Course · 1 - 4 Weeks

Universiteit Leiden
Skills you'll gain: Sustainable Development, Sustainable Systems, Environment, Pollution Prevention, Climate Change Mitigation, Environmental Policy, Environmental Science, Systems Thinking, Climate Change Adaptation, Biology, Community Organizing
Beginner · Course · 1 - 4 Weeks

Coursera
Skills you'll gain: Database Management, Relational Databases, MySQL, PHP (Scripting Language), SQL, Databases, Object Oriented Programming (OOP), Web Development, Full-Stack Web Development, Hypertext Markup Language (HTML), Back-End Web Development
Intermediate · Guided Project · Less Than 2 Hours

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

Universiteit Leiden
Skills you'll gain: Predictive Analytics, Predictive Modeling, Model Evaluation, R Programming, Preventative Care, Health Informatics, Statistical Modeling, Sample Size Determination, Statistical Inference, Regression Analysis, Precision Medicine, Supervised Learning, Data Preprocessing
Intermediate · Course · 1 - 3 Months

Columbia University
Skills you'll gain: Computer Graphics, Image Analysis, 3D Modeling, Medical Imaging, Computer Vision, Automation Engineering, Mathematical Modeling
Beginner · Course · 1 - 3 Months

Board Infinity
Skills you'll gain: Angular, Cascading Style Sheets (CSS), Web Design and Development, Front-End Web Development, HTML and CSS, Responsive Web Design, jQuery, React.js, Javascript, Web Applications, JavaScript Frameworks, Web Development, Web Development Tools, UI Components, User Interface and User Experience (UI/UX) Design, Web Content Accessibility Guidelines, Event-Driven Programming, Maintainability, Software Design Patterns
Beginner · Specialization · 1 - 3 Months

University of Colorado Boulder
Skills you'll gain: User Research, User Experience Design, User Experience, User Interface and User Experience (UI/UX) Design, Usability, Verification And Validation, Human Computer Interaction, Usability Testing, Design Research, Embedded Systems, Wireframing, Prototyping, Unified Modeling Language, Persona Development
Build toward a degree
Intermediate · Course · 1 - 3 Months

ESSEC Business School
Skills you'll gain: Peer Review, Analytical Skills, Complex Problem Solving, Data Analysis, Data Storytelling, Value Propositions, Data Integration, Exploratory Data Analysis, Data-Driven Decision-Making, Data Visualization, Presentations
Mixed · Course · 1 - 3 Months

Johns Hopkins University
Skills you'll gain: Integral Calculus, Numerical Analysis, Calculus, Probability, Applied Mathematics, Advanced Mathematics, Geometry, Mathematical Modeling
Intermediate · Course · 1 - 4 Weeks