Data Structures and Algorithms courses can help you learn about arrays, linked lists, trees, and graph structures, along with sorting and searching algorithms. You can build skills in problem-solving, optimizing code efficiency, and analyzing algorithm complexity. Many courses introduce tools like Python, Java, or C++ for implementing these concepts, as well as platforms for coding challenges that reinforce your understanding through practical application.

University of Colorado Boulder
Skills you'll gain: Verification And Validation, Computational Logic, Theoretical Computer Science, Automation, Agentic systems, System Requirements, Robotics, Artificial Intelligence, Algorithms
Build toward a degree
Intermediate · Course · 1 - 3 Months

Skills you'll gain: Database Design, Relational Databases, Database Application, Microsoft SQL Servers, Data Integrity, Databases, Database Management, Data Modeling, Visual Basic (Programming Language), Application Development, User Interface (UI)
Beginner · Course · 1 - 4 Weeks

Skills you'll gain: Phlebotomy, Blood Collection, Urinalysis, Patient Education And Counseling, Geriatrics, Electocardiography, Pediatrics, Specimen Collection, Cardiology, Medical Assistance, Patient Preparation, Diagnostic Tests, Basic Patient Care, Patient Communication, Infection Control
Beginner · Course · 1 - 4 Weeks

Parsons School of Design, The New School
Skills you'll gain: Economics, Policy, and Social Studies, Socioeconomics, Economics, Market Dynamics, Social Justice, Economic Development, Labor Relations, Sustainable Development, International Relations, World History, Global Marketing, Behavioral Economics, Innovation, Leadership, Critical Thinking, Communication
Beginner · Course · 1 - 3 Months

Skills you'll gain: Generative AI, Financial Data, Financial Analysis, Data-Driven Decision-Making, Financial Statements, Market Intelligence, Trend Analysis, Unstructured Data, Investment Management, Financial Market, Artificial Intelligence, Analysis, Natural Language Processing
Intermediate · Course · 1 - 4 Weeks

Council on Foreign Relations
Skills you'll gain: Climate Change Adaptation, Climate Change Mitigation, Energy and Utilities, Social Justice, Environmental Issue, Sustainable Development, Environmental Policy, Emerging Technologies, Sustainable Technologies, Artificial Intelligence
Beginner · Course · 1 - 3 Months

Johns Hopkins University
Skills you'll gain: Program Evaluation, Maternal Health, Nutrition and Diet, Child Health, Social Impact, Research Methodologies, Data Collection, Epidemiology, Public Health and Disease Prevention, Health Policy, Mathematical Modeling, Statistical Modeling, Data Analysis Software
Intermediate · Course · 1 - 3 Months

Skills you'll gain: Responsible AI, Generative AI, Natural Language Processing, Robotics, Business Logic, Risk Mitigation
Beginner · Course · 1 - 4 Weeks

Arizona State University
Skills you'll gain: Human Factors, Human Factors Engineering, Control Systems, Sports Medicine, Human Musculoskeletal System, Mechanics, Human Centered Design, Product Design, Injury Prevention, Rehabilitation
Intermediate · Course · 1 - 3 Months

Skills you'll gain: Retrieval-Augmented Generation, LangChain, LLM Application, Large Language Modeling, PostgreSQL, Database Systems, User Interface (UI), Prompt Patterns, Human Computer Interaction, UI Components, User Interface (UI) Design, Artificial Intelligence, Cloud Computing
Beginner · Project · Less Than 2 Hours

Tsinghua University
Skills you'll gain: Cultural Diversity, Culture, English Language, Literacy, Writing, Interpersonal Communications, Grammar, Vocabulary
Intermediate · Course · 1 - 3 Months

Skills you'll gain: Computer Security Incident Management, Digital Forensics, Disaster Recovery, Risk Management Framework, Cybersecurity, NIST 800-53, Threat Management, Risk Management, Security Strategy, Network Security, Security Controls, Vulnerability Assessments, Virtualization and Virtual Machines, Cloud Computing
Intermediate · Course · 1 - 4 Weeks