1. Are there any ‘paid’ videos?
Yes, those videos which come with a tag of ‘add to cart’ are downloadble and paid
2. What are ‘Free Videos’ ?
Mostly videos on concepts are free. To view these videos nothing is charged
3. In what order any set of videos should be seen?
Well, you can see these videos in any order. Just browse the questions and see where you need a help.
But, for user convenience, we have uploaded these videos in a sequence in which we think a topic should be taught.