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.

Skills you'll gain: Responsive Web Design, Web Design, HTML and CSS, Cascading Style Sheets (CSS), Hypertext Markup Language (HTML), Bootstrap (Front-End Framework), UI Components, Javascript and jQuery, Front-End Web Development, Usability, Web Development, Browser Compatibility, User Interface (UI), Interactive Design, Javascript, Creative Design, Web Design and Development, Typography, Web Analytics and SEO, Wireframing
Beginner · Specialization · 3 - 6 Months

LearnQuest
Skills you'll gain: Teradata SQL, Data Modeling, Database Design, Database Administration, Database Architecture and Administration, Database Management, Database Management Systems, Data Architecture, Data Warehousing, SQL, Data Import/Export, Software Installation, Performance Tuning
Beginner · Course · 1 - 3 Months

Skills you'll gain: Amazon S3, Amazon Web Services, AWS CloudFormation, Cloud Storage, Infrastructure as Code (IaC), Data Security, AWS Identity and Access Management (IAM), Cloud Hosting, Cloud Security, Performance Tuning, Data Storage, Command-Line Interface, Encryption
Intermediate · Course · 3 - 6 Months

Skills you'll gain: HTML and CSS, Cascading Style Sheets (CSS), Responsive Web Design, Web Design, Hypertext Markup Language (HTML), Front-End Web Development, User Interface (UI) Design, Semantic Web, Typography
Intermediate · Guided Project · Less Than 2 Hours

Technical University of Munich (TUM)
Skills you'll gain: Fundraising, Business Valuation, Biotechnology, Entrepreneurial Finance, Commercial Laws, Investments, Return On Investment, Private Equity, Due Diligence, Presentations, Finance, Financial Analysis, Negotiation, Contract Negotiation, Intellectual Property, Stakeholder Analysis
Intermediate · Course · 1 - 3 Months

Skills you'll gain: Bootstrap (Front-End Framework), Responsive Web Design, UI Components, HTML and CSS, Application Deployment, Cloud Deployment, Web Design, Web Design and Development, Web Development, Front-End Web Development, Web Development Tools, Interactive Design, Javascript, Cloud Hosting, User Interface (UI), User Interface (UI) Design, Typography, Animations, Data Validation
Beginner · Course · 1 - 3 Months
Skills you'll gain: Open Web Application Security Project (OWASP), SonarQube, DevSecOps, Jenkins, Software Development Life Cycle, CI/CD, Application Security, Secure Coding, Continuous Integration, DevOps, Security Testing, Continuous Delivery, Code Review, Vulnerability Assessments, Vulnerability Management, Security Awareness, Docker (Software), Dependency Analysis, Compliance Management, Automation
Intermediate · Course · 1 - 4 Weeks

Board Infinity
Skills you'll gain: Responsible AI, MLOps (Machine Learning Operations), Model Deployment, Jenkins, AI Security, Applied Machine Learning, Java, Continuous Deployment, Federated Learning, Artificial Intelligence, Machine Learning, Spring Framework, Application Deployment, Reinforcement Learning, Spring Boot, Enterprise Application Management
Intermediate · Course · 1 - 4 Weeks

Skills you'll gain: Computer Graphics, Application Development, Visualization (Computer Graphics), Software Design, C++ (Programming Language), Microsoft Windows, Software Architecture, Application Lifecycle Management, Context Management, System Configuration, Debugging
Mixed · Course · 1 - 4 Weeks

Johns Hopkins University
Skills you'll gain: Rmarkdown, Data Science, Version Control, R (Software), Big Data, R Programming, Data Visualization Software, General Science and Research, GitHub, Statistical Programming, Git (Version Control System), Data Analysis, Exploratory Data Analysis, Integrated Development Environments, Software Installation
Mixed · Course · 1 - 4 Weeks

University of Maryland, College Park
Skills you'll gain: No-Code Development, Application Development, User Experience, User Interface (UI), Data Modeling, Application Design, Cloud-Based Integration, Application Deployment, Automation, Cloud Applications, Salesforce, ServiceNow
Intermediate · Course · 1 - 3 Months

Scrimba
Skills you'll gain: Cascading Style Sheets (CSS), UI Components, Interactive Design, HTML and CSS, User Interface (UI), Interaction Design, Responsive Web Design, User Interface (UI) Design, Web Components, Web Design, Animations, Web Development
Intermediate · Course · 1 - 4 Weeks