1. Artificial intelligence and machine learning: Coursera offers a variety of free AI and machine learning courses from top universities and organizations, such as IBM and Google.
  2. Cloud computing: AWS Educate provides free access to cloud computing resources and training, including courses and certification exams.
  3. Computer programming and software development: Codecademy offers free coding courses in a variety of programming languages, including Python, Java, and JavaScript.
  4. Critical thinking and problem solving: edX offers free courses on critical thinking and problem solving, such as "Introduction to Logic" and "Think Again: How to Reason and Argue."
  5. Data analysis and visualization: DataCamp offers a free introduction to data analysis course in R and Python.
  6. Digital marketing: Google Digital Garage offers free digital marketing courses, including "Digital Marketing Fundamentals" and "Search Engine Optimization (SEO) Fundamentals."
  7. Leadership and communication: Coursera offers free courses on leadership and communication, such as "Leadership: Perspective and Practice" and "Effective Communication."
  8. Project management: Alison offers a free project management course that covers the basics of project planning, execution, and evaluation.
  9. Cybersecurity: Cybersecurity fundamentals on Coursera by Cisco
  10. Design thinking and user experience (UX) design: Coursera offers free courses on design thinking, such as "Design Thinking for Innovation" and "Human-Centered Design: An Introduction to the Design Thinking Process."