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.

University of Michigan
Skills you'll gain: Data Mining, Unsupervised Learning, Data Science, Anomaly Detection, Python Programming, Classification Algorithms
Advanced · Course · 1 - 4 Weeks

Scrimba
Skills you'll gain: Responsive Web Design, User Interface (UI) Design, User Interface (UI), HTML and CSS, Web Design, Figma (Design Software), Typography, Front-End Web Development, Web Design and Development, Maintainability, Mockups, Web Content Accessibility Guidelines, UI Components, Cascading Style Sheets (CSS), Layout Design, Web Development, Usability, Prototyping, Web Development Tools, Software Engineering
Intermediate · Specialization · 3 - 6 Months

Skills you'll gain: Ruby (Programming Language), Object Oriented Programming (OOP), Debugging, Development Environment, Integrated Development Environments, Computer Programming, Programming Principles, Apple Xcode, Software Installation, Microsoft Windows, Command-Line Interface
Beginner · Course · 1 - 3 Months

Skills you'll gain: Virtual Local Area Network (VLAN), Open Shortest Path First (OSPF), Network Routing, Network Switches, Routing Protocols, Virtual Networking, TCP/IP, Network Architecture, Local Area Networks, Network Troubleshooting, Network Protocols, System Configuration
Intermediate · Course · 1 - 3 Months
University of Colorado Boulder
Skills you'll gain: Control Systems, Simulations, Mechanics, Angular, Engineering Analysis, Torque (Physics), Mathematical Modeling, Linear Algebra, Differential Equations, Calculus
Advanced · Course · 1 - 3 Months

Skills you'll gain: Exploratory Data Analysis
Advanced · Course · 1 - 4 Weeks

École Polytechnique Fédérale de Lausanne
Skills you'll gain: Apache Spark, Scala Programming, Big Data, Data Manipulation, Distributed Computing, Data Processing, Performance Tuning, SQL, Programming Principles, Data Storage Technologies
Intermediate · Course · 1 - 4 Weeks

Pohang University of Science and Technology(POSTECH)
Skills you'll gain: Blockchain, Cryptography, Transaction Processing, Encryption, Data Structures, Virtualization and Virtual Machines, Network Protocols, Distributed Computing, Algorithms
Intermediate · Course · 1 - 3 Months

Skills you'll gain: Threat Modeling, Incident Response, IT Security Architecture, Secure Coding, Application Security, Identity and Access Management, Information Systems Security Assessment Framework (ISSAF), Security Testing, Continuous Monitoring, Information Systems Security, Network Security, Computer Security Incident Management, Security Strategy, Zero Trust Network Access, Security Awareness, Security Information and Event Management (SIEM), Risk Management Framework, Disaster Recovery, Cybersecurity, Enterprise Architecture
Beginner · Specialization · 1 - 3 Months

University of Michigan
Skills you'll gain: Debugging, Data-oriented programming, Program Development, Python Programming, Data Manipulation, Data Analysis
Intermediate · Course · 1 - 4 Weeks
Skills you'll gain: Data Cleansing, Snowflake Schema, Data Quality, Data Transformation, Data Validation, Data Manipulation, Data Analysis, SQL, Big Data
Intermediate · Guided Project · Less Than 2 Hours

Skills you'll gain: Electric Power Systems, Safety Standards, Safety and Security, Emerging Technologies, Control Systems, Global Positioning Systems, Environmental Issue, Computer Vision, Artificial Intelligence, Algorithms
Beginner · Course · 1 - 4 Weeks