SQL FREE COURSES
Udemy offers a number of free courses on various topics. They offer free courses on specific programming languages like Python and SQL, as well as on more general topics such as marketing and leadership.
Udemy is an online learning marketplace with over 35,000 courses and 30 million students in 190 countries.
Students can choose from different categories such as design, data science, business and entrepreneurship, programming, software development, and more.
All Udemy courses are available to the public for free: there are no restrictions or enrollment requirements.