LLB

CLAT is not a course. It is a common law admission test for 5-year BA LLB, BLS LLB or BBA LLB course from various National Law University such as Jodhpur, Hyderabad, West Bengal, Mumbai and so on. If you are interested is law, has good logical reasoning, good in communication and persuasion then you may go for law. If IIT stands for engineering, AIIIMS for MBBS then National Law University stands for law programmes. You can get a job in the legal department as a legal advisor in drafting and application of litigations as well as non-litigation and you may start your independent career too.

Depends on your category.

Depends what category you come under.

You can opt for 5-year BLS LLB or BA LLB as it would be a better option. You can pursue BA in political science.

Pursuing LLB from BHU is not expensive at all. You will have to pay a yearly fee of Rs. 2000 and 200 extra for even semester exams. So there is no fee burden. If we talk about books, books are available at shops at minimum price possible.

Hello,
You have to appear in compartment exams and form for the same is available on the website or at school. You have to fill the form and then appear in the exam in 16th of June.

It is difficult but not impossible.

Please refer to the following link:
https://www.quora.com/Whats-the-difference-between-B-B-A-LLB-and-B-A-LLB-Which-one-is-better
Good luck.