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Very helpful. He explains the concepts very simply without losing the depth of the concepts. This has definitely helped me in college. Reviewing topics I hadn't mastered in previous classes has helped me with later classes which build off said topics.
If you ever have spare time and want to learn a thing or two about something maybe you never even thought you might be interested in, this is definitely the sight for you. The sight was established for those who could not somehow get an education (mostly due to financial issues). It is a great website and the best part is, it's FREE!
One of the good guys left in the world, thank you for everything
Excellent online educational source. This site has over 2 400 videos covering topics from arithmetic to physics, finance and history. It is beneficial to people of all ages. It could be used for high-school students or even adults that want to improve their skills, or for those oldies that want to refresh their memory. This site is highly recommended.
