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.

Dassault Systèmes
Skills you'll gain: SolidWorks (CAD), Computer-Aided Design, Drafting and Engineering Design, 3D Modeling, Engineering Design Process, Mechanical Design, Design Software, Mechanical Engineering
★ 4.2 (12) · Beginner · Course · 1 - 4 Weeks

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

EDUCBA
Skills you'll gain: UI Components, Interactive Design, User Interface (UI), User Interface (UI) Design, Event-Driven Programming, Application Design, Development Environment, Application Development, Application Frameworks, Software Installation
★ 4.5 (25) · Intermediate · Course · 1 - 4 Weeks

University of Colorado Boulder
Skills you'll gain: Tidyverse (R Package), Data Import/Export, R (Software), Data Wrangling, R Programming, Data Manipulation, Data Analysis, Ggplot2, Relational Databases, Data Transformation, Data Cleansing, Programming Principles
★ 4.1 (13) · Beginner · Course · 1 - 3 Months

Technical University of Munich (TUM)
Skills you'll gain: Biotechnology, Business Modeling, Commercialization, Entrepreneurship, Business Strategy, Business Strategies, Feasibility Studies, Business Valuation, Business Planning, Market Opportunities, Product Development
★ 4.7 (12) · Intermediate · Course · 1 - 3 Months

Skills you'll gain: Unit Testing, Test Case, Application Deployment, Responsive Web Design, Continuous Deployment, Maintainability, LinkedIn, Cascading Style Sheets (CSS), Front-End Web Development, Software Testing, Test Script Development, HTML and CSS, Development Testing, Hypertext Markup Language (HTML), Interviewing Skills, Web Development Tools, Debugging, Web Development, Application Development, Software Documentation
★ 4.6 (21) · Intermediate · Specialization · 1 - 3 Months

SkillUp
Skills you'll gain: Group Policy, Dynamic Host Configuration Protocol (DHCP), Azure Active Directory, Active Directory, Windows Servers, Hyper-V, Remote Access Systems, iSCSI Configuration, Virtual Private Networks (VPN), Containerization, Kubernetes, Microsoft Servers, Microsoft Windows, Docker (Software), Hybrid Cloud Computing, Virtualization, Virtual Machines, Server Administration, Network Administration, Virtual Networking
★ 4.6 (10) · Intermediate · Specialization · 1 - 3 Months

Rutgers the State University of New Jersey
Skills you'll gain: Supplier Quality Management, Procurement, Strategic Sourcing, Supplier Risk Management, Purchasing, Supply Management, Supplier Management, Risk Management, Business Risk Management, Supply Chain, Quality Management, Supply Chain Management, Risk Analysis, Cost Reduction, Cost Benefit Analysis, Cost Management
★ 4.6 (12) · Intermediate · Course · 1 - 3 Months

University of Colorado Boulder
Skills you'll gain: Physics, Physical Science, Materials science, Mathematical Modeling, Applied Mathematics
★ 4.8 (11) · Beginner · Course · 1 - 4 Weeks

Skills you'll gain: ChatGPT, Prompt Patterns, Quick Learning, Overcoming Obstacles, Responsible AI, Learning Strategies, Context Engineering, Generative AI, AI powered creativity, AI literacy, Storytelling, Writing, Artificial Intelligence
★ 4.7 (23) · Intermediate · Course · 1 - 3 Months

Skills you'll gain: Cryptographic Protocols, Blockchain, Business Continuity Planning, Cryptography, Encryption, Business Continuity, Disaster Recovery, Data Management, Security Engineering, Digital Assets, Threat Modeling, Vulnerability Assessments, Security Architecture Review, Cybersecurity, Regulatory Compliance, Enterprise Security, Network Security, Asset Protection, Vulnerability Management, Data Security
★ 5 (10) · Beginner · Specialization · 1 - 3 Months

University of Michigan
Skills you'll gain: Hazard Analysis, Environment Health And Safety, Health Assessment, Safety Standards, Health And Safety Standards, Chemistry, Risk Analysis, Sustainable Engineering, Pollution Prevention, Analytical Chemistry, Personal Care, Epidemiology, Product Lifecycle Management, Environmental Regulations, Environmental Science, Child Health
★ 5 (11) · Intermediate · Course · 1 - 4 Weeks