What is the process to start a billiard hall?
How do I apply for startup loans?
How can I get Grants for the business?

Start by going to your local bank and asking if they do small business loans and what the application process is. The will probably ask for a business plan and feasibility studies. They should be able to tell you what they are looking for in the application. If you are having problems writing the plan your local community college probably has a small business planning course.