You are a student of HR. I am too. Welcome to this forum with my response to your first query/post. Your query is a bit confusing to me, but I am pleased to reply to you.
PF Contribution Details
The PF contribution made by the employee and employer is at 12% of the employee's salary. Salary includes basic pay, DA, and any retaining allowance paid.
Compulsory Contribution Conditions
For salaries below Rs. 6500 per month, PF contribution is compulsory. It is not compulsory for salaries above Rs. 6500 if the employee is not a member of PF already. Once an employee becomes a PF member, they must remain a member until the end.
Reading and Resources
Reading should be your passion. You need to read extensively, especially about the features of various labor laws. I recommend purchasing the book "Employer's Guide to Labour Laws" by S R Samant. If you do not understand any provision, feel free to ask this forum for help.
I hope this helps clarify things for you.
Regards