Duolingo

Duolingo is a free language learning platform with a wide range of languages to choose from. It has exercises and lessons to help you learn your chosen language, and you can use it on your computer or mobile device. If you want to learn with friends, Duolingo also has group classes that can be taken anytime and at any level. The courses are led by trained tutors who will guide the group through the lessons together.

Khan Academy

Khan Academy is an online learning platform that helps you learn almost anything for free. Their mission is to provide a world-class education to anyone, anywhere. Their website has over 10 million registered users and over 2,000 courses with over 180 million views. To use Khan Academy, you need to create an account by entering your email address and creating a password. Once you're logged in, navigate to the course that you want to study using their Search feature or choose between Open Courses or Curriculum (which contains the content of specific subjects).

Coursera

Coursera is a free online learning platform that offers more than 1,000 courses from 140 universities. Students can access their course materials, watch lectures, participate in discussion forums and earn verified certificates from top universities around the world.

Code Academy

Code Academy teaches you how to build websites and apps through a series of lessons and exercises. The course is in your browser, so all you need is an internet connection—and no prior coding experience is required!

The curriculum constantly updates with new courses and features to keep things fresh and exciting, but it starts with the basics—like HTML & CSS—and gets more advanced as you go along. You can learn at your own pace or use one of their challenges if you want some extra motivation from others taking the same course as you (or maybe even compete against them).

Udemy

Udemy is a marketplace for high-quality video courses in the areas of technology, business and creative skills. You can learn from over 55,000 different instructors on this site, and all of the content is created by professionals in their fields. You can search through the categories on their homepage or look at specific topics like "Python" or "Photography," but there are also some overall categories that could be helpful when it comes to looking for courses:

• Technology: If you're interested in learning how to code or program computers/robots/etc., Udemy has plenty of options available on its platform
• Business & Entrepreneurship: If you want to start your own company one day or just need some organizational skills, there are courses here too. This category includes everything from accounting basics, through to marketing strategies and more advanced management techniques
• Personal Development: One important thing about being an entrepreneur is keeping yourself well-rounded—and these types of classes can help with that. They cover topics such as personal finance planning (think budgeting), health & wellness (like exercising regularly), emotional intelligence (how do emotions affect us?) and time management skills (so we don't stress ourselves out).