One popular platform is Coursera. It partners with top universities and institutions worldwide to provide a wide range of computer courses. For example, you can find courses on computer programming basics, like Python for Beginners. The courses typically include video lectures, quizzes, and assignments. Learners can interact with instructors and fellow students through discussion forums. Coursera also offers certificates upon completion, which can be valuable for career advancement or personal development. However, some courses may require a fee, although financial aid is available for eligible students.

Udemy is another well-known option. It has a vast library of courses created by independent instructors. There are basic computer courses covering everything from computer hardware essentials to software applications like Microsoft Office. The advantage of Udemy is its affordability. Courses are often available at discounted prices, and you can purchase them and access the content at your own pace. The quality of courses can vary since anyone can create and sell a course. So, it's important to read reviews and check the instructor's credentials before enrolling.

Codecademy specializes in teaching programming and coding skills. It offers an interactive learning environment where students can practice writing code directly in the browser. Their basic computer courses focus on languages such as HTML, CSS, and JavaScript. The hands-on approach helps learners quickly grasp the concepts and apply them. Codecademy has both free and paid membership options. The paid membership gives access to more advanced content and personalized learning paths. It's a great choice for those interested in building a career in web development or software engineering.