Learn almost everything. Completely free, forever.
KHAN Academy
https://www.khanacademy.org/
Learn almost everything. Completely free, forever.
Our pick of academic courses are aimed at school and college students who want help with their homework, or want to further their understanding of a subject. They are also useful if you are looking to apply to university and want to understand how you are taught and learn, and as a taster to see whether a subject is for you and whether you want to take it to a deeper level of understanding.