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.

Rice University
Skills you'll gain: Mechanics, Physics, Mechanical Engineering, Calculus, Physical Science, Problem Solving
★ 4.5 (48) · Intermediate · Course · 1 - 4 Weeks

University of Colorado Boulder
Skills you'll gain: Computer Vision, Convolutional Neural Networks, Image Analysis, Tensorflow, Deep Learning, Artificial Neural Networks, Machine Learning Methods, Model Training, Model Optimization, Applied Machine Learning, Fine-tuning, Feature Engineering, Machine Learning, Model Evaluation, Classification Algorithms
★ 4.6 (90) · Intermediate · Course · 1 - 3 Months

Politecnico di Milano
Skills you'll gain: Energy and Utilities, Facility Management and Maintenance, Property Management Systems, Building Services Engineering, Facility Management, Plant Operations and Management, Thermal Management, Building Codes, Sustainable Architecture, HVAC, Engineering Analysis
★ 4.5 (191) · Beginner · Course · 1 - 4 Weeks

Board Infinity
Skills you'll gain: ASP.NET, .NET Framework, Model View Controller, Web Applications, Middleware, Debugging, Web Development, Application Frameworks, Application Deployment, Application Development, Development Environment, Software Testing, Microsoft Development Tools, Cross Platform Development, Software Architecture, Open Source Technology, Command-Line Interface
★ 4 (80) · Beginner · Course · 1 - 4 Weeks

Columbia University
Skills you'll gain: Derivatives, Credit Risk, Securities (Finance), Financial Market, Portfolio Risk, Capital Markets, Risk Modeling, Risk Management, Portfolio Management, Financial Modeling, Mathematical Modeling, Probability Distribution, Computer Programming
★ 4.5 (33) · Intermediate · Course · 1 - 3 Months

Skills you'll gain: Kubernetes, Release Management, Cloud Infrastructure, Software Installation, Application Lifecycle Management, Performance Tuning, Cloud Computing, General Networking, Systems Architecture, Software Architecture, Network Model, Memory Management
★ 4.2 (68) · Intermediate · Specialization · 3 - 6 Months

Universitat Autònoma de Barcelona
Skills you'll gain: Video Game Development, Computer Graphics, Visualization (Computer Graphics), Animation and Game Design, Game Design, 3D Assets, Microsoft Visual Studio, Computer Graphic Techniques, Artificial Intelligence, User Interface (UI), Animations, Microsoft Development Tools, Application Development, Middleware
★ 3.9 (105) · Mixed · Course · 1 - 4 Weeks

Dartmouth College
Skills you'll gain: Structural Engineering, Structural Analysis, Construction, Civil Engineering, Architecture and Construction, Engineering Analysis, Building Design, Engineering Design Process, Mechanics
★ 4.8 (81) · Beginner · Course · 1 - 4 Weeks

Skills you'll gain: Predictive Modeling, Applied Machine Learning, Model Evaluation, Jupyter, Predictive Analytics, Model Training, Lending and Underwriting, Python Programming, Data Science, Machine Learning Methods, Model Optimization, Data Preprocessing, Machine Learning, Data Analysis
★ 4.7 (114) · Intermediate · Guided Project · Less Than 2 Hours

University of Colorado Boulder
Skills you'll gain: Control Systems, Torque (Physics), Mathematical Modeling, Linear Algebra, Differential Equations, Systems Analysis, Engineering Analysis, Applied Mathematics, Mechanics
★ 4.7 (71) · Advanced · Course · 1 - 4 Weeks

National Academy of Sports Medicine
Skills you'll gain: Nutrition and Diet, Kinesiology, Exercise Science, Nutrition Care Plans, Preventative Care, Public Health and Disease Prevention, Human Musculoskeletal System, Basic Life Support (BLS) Certification, Automated External Defibrillator, Cardiopulmonary Resuscitation (CPR), Athletic Training, Motivational Skills, Anatomy, Physiology
★ 4.5 (59) · Beginner · Course · 1 - 4 Weeks

University of Colorado System
Skills you'll gain: Unity Engine, Video Game Development, C# (Programming Language), Game Design, Object Oriented Design, Object Oriented Programming (OOP), Application Design, Software Design, Programming Principles, Application Development, Scripting
★ 4.8 (68) · Intermediate · Course · 1 - 4 Weeks