If you are looking for Integrated Law preparation, There are many coaching, Institutes but you can prefer Career Launcher or TIME which is mostly preferred by the students.

If you want to know the career options after completing the programme-

A degree in law not only lets you practise as a lawyer in the courts but it also opens your career options in the sector like corporate management, legal services and administrative services, defense, Tax, department.
After completing your Integrated or three years law programme There are many options you can opt:
You can apply for AIBE exam to practice legal profession in India. Or You can apply for Indian judicial Services Exam (IJS) exam to become a Judge.
If you are interested to be a professor then you can go for LLM after that PHD.

In case you have any other query then let me know.

Good Luck!