I am using youtube from last 6-7 year, whenever I feel any confusion related to anything I search it on youtube then I get related vidEo which solve my confusion.
From entertainment to study whatever you want you can easily find it on youtube.
I personally recommed youtube to all of you.
If you are student you get alot of educational content
Which is freely available on youtube.
You are lover of enterntainment then you get comedy video song movie etc which is available for both paid and free service.
Finally I say I love youtube