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.

McMaster University
Skills you'll gain: Experimentation, Scientific Visualization, Plot (Graphics), Data Visualization, Predictive Modeling, Pareto Chart, Predictive Analytics, Model Optimization, Regression Analysis, A/B Testing, Statistical Modeling, Process Optimization, Statistical Software, Statistical Methods, Analysis, Data Analysis Software, Mathematical Modeling, R Programming, Data Analysis, Statistical Analysis
★ 4.9 (938) · Intermediate · Course · 1 - 3 Months

Coursera
Skills you'll gain: Model Training, Regression Analysis, NumPy, Machine Learning Algorithms, Machine Learning, Model Optimization, Deep Learning, Data Science, Python Programming
★ 4.6 (441) · Intermediate · Guided Project · Less Than 2 Hours

University of Toronto
Skills you'll gain: Geographic Information Systems, GIS Software, Spatial Analysis, Spatial Data Analysis, Geospatial Information and Technology, Query Languages, Data Access, Data Processing, Image Analysis, Image Quality
★ 4.9 (632) · Beginner · Course · 1 - 3 Months

Scrimba
Skills you'll gain: Python Programming, Programming Principles, Computational Logic, Computer Programming, Web Development Tools, Web Development, Software Engineering
★ 4.7 (21) · Intermediate · Course · 1 - 4 Weeks

Universidad de Palermo
Skills you'll gain: Eclipse (Software), Java, Java Programming, Object Oriented Programming (OOP), Integrated Development Environments, Data Structures, File I/O, Programming Principles, Algorithms, Computer Programming, Software Development Tools, Computational Thinking, Software Development
Beginner · Course · 1 - 4 Weeks
University of London
Skills you'll gain: Applied Machine Learning, Model Evaluation, Model Training, Artificial Intelligence and Machine Learning (AI/ML), Artificial Intelligence, Machine Learning, Machine Learning Methods, Computer Vision, AI literacy, Image Analysis, Feature Engineering, Data Literacy
★ 4.7 (12) · Beginner · Course · 1 - 4 Weeks

Skills you'll gain: WordPress, Information Architecture, Order Processing, Cloud Hosting, Frontend Performance, Web Design, Secure Coding, Performance Tuning, Amazon Web Services, Order Management, Data Management, Content Management Systems, Web Design and Development, Usability, Cloud Deployment, Performance Testing, Remote Access Systems, Payment Processing, Web Development, Web Servers
★ 4.7 (25) · Beginner · Specialization · 1 - 3 Months

Skills you'll gain: Plotly, Dashboard, Plot (Graphics), Pandas (Python Package), Dashboard Creation, Data Manipulation, Interactive Data Visualization, Data Visualization Software, Data Visualization, Web Applications, Web Design and Development, Application Development, Data Presentation, Data Science, Python Programming
★ 4.7 (403) · Intermediate · Guided Project · Less Than 2 Hours

Infosec
Skills you'll gain: Linux Administration, Version Control, Linux, Git (Version Control System), Linux Servers, Linux Commands, Network Troubleshooting, Unix, Operating System Administration, Bash (Scripting Language), Systems Administration, Scripting, User Provisioning, Shell Script, User Accounts, Software Versioning, System Configuration, Unix Shell, Network Monitoring, Scripting Languages
★ 4.4 (22) · Intermediate · Course · 1 - 3 Months

Duke University
Skills you'll gain: Life Sciences, Molecular Biology, Molecular, Cellular, and Microbiology, Biology, Biotechnology, Environment, Taxonomy, Scientific Methods
★ 4.8 (1.9K) · Mixed · Course · 1 - 3 Months

Microsoft
Skills you'll gain: Quality Assurance, Test Data, Test Case, Root Cause Analysis, Prompt Engineering, Regression Testing, Software Quality Assurance, Test Script Development, Test Tools, Test Planning, Test Execution Engine, Prompt Engineering Tools, Generative AI Agents, Software Testing, Dashboard, Scenario Testing, Requirements Analysis, Data Analysis, Data Science, Information Technology
Intermediate · Course · 1 - 3 Months
Johns Hopkins University
Skills you'll gain: Oncology, Medical Imaging, Radiology, Diagnostic Radiology, Mammography, Molecular Biology, X-Ray Computed Tomography, Clinical Trials, Molecular, Cellular, and Microbiology, Radiation Therapy, Cell Biology, Treatment Planning, Patient Treatment, Pathology, Epidemiology, Preventative Care, Biology, Risk Analysis, Surgery
★ 4.8 (7.9K) · Beginner · Course · 1 - 3 Months