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.

Infosec
Skills you'll gain: Stakeholder Engagement, Project Schedules, Stakeholder Management, Information Technology, Project Risk Management, Environmental Social And Corporate Governance (ESG), IT Management, Scheduling, Vendor Management, Procurement, Purchasing, Vendor Relationship Management, Project Management, Stakeholder Communications, Project Coordination, Issue Tracking, Risk Management, Project Planning, Quality Management, Performance Management
★ 4.5 (37) · Beginner · Course · 1 - 4 Weeks

University of California, Davis
Skills you'll gain: jQuery, Javascript and jQuery, UI Components, Scripting, JavaScript Frameworks, Cascading Style Sheets (CSS), HTML and CSS, Javascript, Hypertext Markup Language (HTML), Frontend Performance, Animations, Event-Driven Programming
★ 4.8 (128) · Beginner · Course · 1 - 4 Weeks

Skills you'll gain: Model Deployment, Dataflow, Data Pipelines, Dashboard Creation, Google Cloud Platform, Data Lakes, Real Time Data, PySpark, Dashboard, Apache Kafka, Tensorflow, Data Governance, Apache Spark, Data Warehousing, Data Import/Export, Data Processing, Extract, Transform, Load, Unstructured Data, Big Data, Operational Databases
★ 4.4 (58) · Intermediate · Specialization · 3 - 6 Months

Princeton University
Skills you'll gain: Biology, Life Sciences, Physical Science, Biochemistry, Physics, Environment, Microbiology, Environmental Science, General Science and Research, Scientific Methods, Research, Mathematical Modeling, Estimation
★ 4.8 (419) · Mixed · Course · 3 - 6 Months

Skills you'll gain: Postman API Platform, Application Programming Interface (API), Software Testing, Restful API, Development Environment, Collaborative Software, Test Tools, Web Applications, Data Import/Export, User Interface (UI), Authentications
★ 4.4 (25) · Beginner · Course · 1 - 3 Months

LearnQuest
Skills you'll gain: Stored Procedure, PL/SQL, Relational Databases, Object-Relational Mapping, SQL, Data Access, Java Platform Enterprise Edition (J2EE), Databases, Database Design, Data Persistence, Object Oriented Design, Java, Data Manipulation, Data Mapping, Java Programming, Database Development, JUnit, Object Oriented Programming (OOP), Database Software, Query Languages
★ 4.7 (56) · Beginner · Specialization · 1 - 3 Months

Northwestern University
Skills you'll gain: Robotics, Mathematical Modeling, Mathematical Software, Applied Mathematics, Mechanics, Simulation and Simulation Software, Engineering, Virtual Environment, Torque (Physics), Numerical Analysis
★ 4.9 (302) · Intermediate · Course · 1 - 4 Weeks

DeepLearning.AI
Skills you'll gain: Probability & Statistics, Statistical Analysis, Statistics, Data Literacy, Data Visualization, Statistical Hypothesis Testing, Statistical Visualization, Descriptive Statistics, Data Analysis, Analytics, Statistical Methods, Histogram, Plot (Graphics), Probability, Simulations, Probability Distribution, Correlation Analysis, Statistical Inference, Estimation, Sampling (Statistics)
★ 4.8 (63) · Beginner · Course · 1 - 4 Weeks

Skills you'll gain: Adobe Illustrator, Logo Design, Graphic Design, Creative Design, Graphics Software, Graphical Tools, Adobe Creative Cloud, Graphic and Visual Design, Style Guides, Project Design, Design, Digital Design, Design Software, Typography, File Management, Design Elements And Principles, Design Specifications, Color Theory
★ 3.9 (14) · Beginner · Guided Project · Less Than 2 Hours

Skills you'll gain: Java Programming, PostgreSQL, Relational Databases, Java, Java Platform Enterprise Edition (J2EE), Database Development, Systems Development, Database Design, Databases, Application Design, Back-End Web Development, Web Applications, Business Logic, Secure Coding, Data Validation, Process Modeling, Payment Systems, Document Management, Authentications, Verification And Validation
★ 4.5 (21) · Intermediate · Course · 1 - 4 Weeks

Chegg Skills
Skills you'll gain: Prompt Engineering, Prompt Engineering Tools, Prompt Patterns, Responsible AI, Operational Efficiency, Natural Language Processing, AI literacy, Multimodal Prompts, Workflow Management, Data Ethics, Customer Service, AI Enablement, ChatGPT, Generative AI, Customer and Client Support, Artificial Intelligence, Communication, Business Communication, Productivity, Problem Solving
Beginner · Specialization · 1 - 3 Months

University of Illinois Urbana-Champaign
Skills you'll gain: AI Enablement, Data Ethics, Large Language Modeling
Mixed · Course · 1 - 3 Months