Theoretical computer science courses can help you learn algorithms, computational complexity, automata theory, and formal languages. You can build skills in problem-solving, mathematical reasoning, and algorithm analysis, that support tackling complex computational tasks. Many courses introduce tools like Python for algorithm implementation, LaTeX for typesetting mathematical documents, and software for simulating automata, allowing you to apply these concepts in practical scenarios.

Skills you'll gain: Test Tools, Browser Compatibility, Software Testing, Test Automation, Selenium (Software), Web Development Tools, CI/CD, Mobile Development Tools, Cloud Platforms, GitLab, Quality Assurance, UI Components, User Interface (UI)
Beginner · Course · 1 - 4 Weeks

Skills you'll gain: React.js, HTML and CSS, Application Deployment, Web Development, Front-End Web Development, Web Applications, Web Development Tools, Full-Stack Web Development, Web Frameworks, Performance Tuning, Javascript, Server Side, GitHub, Application Programming Interface (API)
Intermediate · Course · 1 - 3 Months

Scrimba
Skills you'll gain: HTML and CSS, Mobile Development, Web Applications, ChatGPT, GitHub, Front-End Web Development, Javascript, Application Deployment, Web Development, Version Control, Responsive Web Design, Video Game Development, Cascading Style Sheets (CSS), Artificial Intelligence, User Interface (UI) Design, Computer Programming, Database Application, Machine Learning
Beginner · Course · 1 - 3 Months

University of Colorado System
Skills you'll gain: Routing Protocols, Network Routing, TCP/IP, Network Protocols, Network Architecture, Network Performance Management, Computer Networking, OSI Models, Local Area Networks, Algorithms
Intermediate · Course · 1 - 3 Months

AI CERTs
Skills you'll gain: Blockchain, Microservices, Enterprise Architecture, Go (Programming Language), Program Development, Business Logic, Application Programming Interface (API), Containerization, Auditing, Application Development, Development Environment, Security Controls, Cryptography, Debugging
Advanced · Course · 1 - 3 Months

Dartmouth College
Skills you'll gain: Supervised Learning, Predictive Modeling, Predictive Analytics, Statistical Modeling, Machine Learning, Machine Learning Algorithms, Regression Analysis, Probability & Statistics, Linear Algebra
Intermediate · Course · 1 - 3 Months

Skills you'll gain: Shell Script, Bash (Scripting Language), Linux Commands, Unix Shell, Linux, Scripting, Unix Commands, Unix, Scripting Languages, Linux Administration, Debugging, Programming Principles
Mixed · Course · 1 - 4 Weeks

Kennesaw State University
Skills you'll gain: Cybersecurity, IT Security Architecture, Network Security, Disaster Recovery, Application Security, Business Continuity, Cryptography, Secure Coding, Systems Development Life Cycle, Security Controls, Law, Regulation, and Compliance, Infrastructure Security, Safety and Security, Identity and Access Management, Governance, Risk Management
Beginner · Course · 1 - 3 Months

Skills you'll gain: DevOps, Agile Methodology, Cloud-Native Computing, CI/CD, Test Driven Development (TDD), Scrum (Software Development), Behavior-Driven Development, Performance Metric, Accountability, Team Oriented, Culture Transformation, Microservices, Cross-Functional Collaboration
Beginner · Course · 1 - 3 Months

Skills you'll gain: User Interface (UI) Design, Web Applications, User Interface (UI), UI/UX Strategy, User Experience Design, Cascading Style Sheets (CSS)
Intermediate · Course · 1 - 4 Weeks

Skills you'll gain: Cybersecurity, Cloud Computing, Network Monitoring, Command-Line Interface, Cloud Services, General Networking, Linux, Windows PowerShell, Virtual Machines
Beginner · Course · 1 - 4 Weeks

University of California, Irvine
Skills you'll gain: Swift Programming, Objective-C (Programming Language), iOS Development, Core Data (Software), Apple iOS, Video Game Development, Game Design, Model View Controller, JSON, User Interface (UI) Design, UI Components, Mobile Development, User Interface and User Experience (UI/UX) Design, OAuth, Responsive Web Design, Prototyping, Animation and Game Design, Apple Xcode, Human Computer Interaction, UI/UX Strategy
Beginner · Specialization · 3 - 6 Months