The MIT OpenCourseWare website provides high-quality teaching and learning resources. It offers free lecture notes, online and offline videos, and exams. You can access it without registering.
Khan Academy is a great study website. It covers a wide range of topics and includes numerous learning exercises. It can help you customize your learning experience to achieve your learning goals.
Coursera is a free learning platform that provides free programs from top universities. All Coursera courses include prerecorded video lectures that you can watch whenever convenient for you.
Stanford Online's free online courses provide valuable learning opportunities. Some programs even provide professional certification after completion. You can use this resource to learn new skills, get a job, and build your future.
iTunes U Free Courses offers free online instruction. It works with any iPhone or iPod and covers a wide range of topics, giving you the flexibility to learn new skills on your own time.