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, HTML and CSS, Web Design, Web Design and Development, Cascading Style Sheets (CSS), Front-End Web Development, Application Deployment
★ 4.7 (22) · Intermediate · Course · 1 - 4 Weeks

Skills you'll gain: Visualization (Computer Graphics), Design Software, Software Installation, Functional Design, Technical Design, Design, Model Optimization, User Interface (UI), Data Import/Export
★ 5 (20) · Intermediate · Course · 1 - 3 Months

University of Colorado Boulder
Skills you'll gain: Machine Controls, Robotics, Control Systems, Engineering, Scientific, and Technical Instruments, Spatial Data Analysis, Applied Mathematics, Linear Algebra, Python Programming, Algorithms
★ 4.6 (17) · Intermediate · Course · 1 - 3 Months

Skills you'll gain: Package and Software Management, Bash (Scripting Language), Git (Version Control System), GitHub, Version Control, Unix Shell, Ubuntu, Shell Script, Scripting, Unix, Scripting Languages, Unix Commands, Linux, System Configuration, grep, Linux Administration, Linux Commands, File Management, Configuration Management, File I/O
★ 2.9 (13) · Beginner · Course · 1 - 4 Weeks

Skills you'll gain: Rust (Programming Language), Development Environment, Programming Principles, Data Structures, Memory Management, Integrated Development Environments, System Programming, Software Installation
★ 3.7 (20) · Beginner · Course · 1 - 3 Months

Arizona State University
Skills you'll gain: Innovation, Problem Solving, Entrepreneurship, Lean Methodologies, Team Oriented, Analysis
★ 4.7 (15) · Beginner · Course · 1 - 3 Months

Skills you'll gain: Routing Protocols, TCP/IP, Network Switches, Network Routers, Virtual Local Area Network (VLAN), Network Protocols, Network Security, General Networking, Network Routing, Network Troubleshooting, Network Administration, Computer Networking, Open Shortest Path First (OSPF), Network Monitoring, Dynamic Host Configuration Protocol (DHCP), Local Area Networks, Network Planning And Design, Border Gateway Protocol, Network Performance Management, Proxy Servers
★ 4.8 (16) · Intermediate · Course · 1 - 3 Months

LearnQuest
Skills you'll gain: SQL, Oracle Databases, Database Design, Relational Databases, Database Systems, Database Theory, Database Management, Databases, Query Languages, Data Integrity, Transaction Processing
★ 4.9 (16) · Beginner · Course · 1 - 3 Months
Skills you'll gain: Descriptive Statistics, R (Software), Statistical Hypothesis Testing, Correlation Analysis, Tidyverse (R Package), Data Analysis, Regression Analysis, Probability & Statistics, Statistical Methods, Data Analysis Software, Data Import/Export, Statistical Analysis, R Programming, Data Wrangling, Statistical Software, Statistical Programming, Data Manipulation
★ 4.3 (19) · Beginner · Course · 1 - 3 Months

LearnKartS
Skills you'll gain: Amazon Web Services, AWS Identity and Access Management (IAM), Amazon DynamoDB, Cloud Services, Cloud Computing, Relational Databases, Cloud Storage, Amazon CloudWatch, Databases, Database Management, Virtual Private Networks (VPN), Configuration Management
★ 4.3 (20) · Intermediate · Course · 1 - 4 Weeks

University of Michigan
Skills you'll gain: Cost Reduction, World History, International Relations, Social Studies, Political Sciences, Emerging Technologies
★ 4.9 (24) · Beginner · Course · 1 - 4 Weeks

Skills you'll gain: AWS Identity and Access Management (IAM), Amazon CloudWatch, Threat Detection, Threat Management, Amazon Web Services, Incident Response, Continuous Monitoring, Cloud Security, Identity and Access Management, Amazon Elastic Compute Cloud, Network Security, Incident Management, Event Monitoring
★ 4.7 (15) · Intermediate · Course · 1 - 4 Weeks