GST practical knowledge/aspects

Hii Respected Sir/friend's,
I am ca final student 2 nd group cleared before 5 years.
Anybody please suggest any good book for practical knowledge of GST,which mostly covers all the practical and theory aspects.
I want to join one new job where there is only GST work.
I have a exposure of only direct tax and little bit VAT.
or Either suggest any video lectures to gain the knowledge.

Thanks a lot ...