Master of Public Health is a program in healthcare for a duration of  2-year.

The list of the top universities offering MPH Program with their course fee are mentioned below-

University of Lucknow- Rs 50,000

Jawaharlal Nehru University, New Delhi-Rs 3640

Panjab University, Chandigarg- Rs 5,850

Amity University-Rs 80,700

Manipal University, Manipal- Rs 2.65 lakh

Noida International University- Rs 83,000

Now, coming to the admission process, it's mostly based on entrance exams covering topics related to public health and allied health sciences, there are rounds of GD and PI mainly to assess the candidate for his/her general aptitude, thereafter merit list is prepared and seats are allocated accordingly.  

I think to crack any exam,you need to have knowledge about your course of study in all aspects, and practice sample papers or previous year papers to at least get acquainted with question pattern and all.

I've just tried to provide you some information concerning your question.For more details regarding entire admission procedure, you may also visit the official websites of colleges to know about fee structure, entrance test, its exact syllabus and the format it contains etc.

Hope, this helps.