As the license requirement has already been covered, I would like to include another suggestion. What you ask is a very broad question and hard to answer on a forum. Forums are much better for very specific questions - which we would be glad to answer. I think your best option would be to start developing a business plan. The business plan will walk you through all the facets of the business - answering the questions you have now and in the future. You can search for sample business plans to see what topics are covered as well as get an idea of what it costs and other requirements. You can also find a SCORE or SBDC in your area. They are free to use and can help you develop and research your business idea.

You need an alcohol license also a seperate license for your bartenders. alcohol permits are state-by-state. That means that there is no general rule to comply with, and anything you may know from another state is irrelevant. You need an experience alcohol license attorney who knows the nitty-gritty rules of the state you're in to make sure you meet all the requirements. Also, if you're in location where there are no more licenses to be had and you need to purchase one from an existing holder, it's a good idea to have an experienced negotiator help you close the best deal possible on this valuable'”and potentially very expensive'”asset

Do you mean a bar? What state? Is it a smoking and drinking lounge? Is there entertainment?   Give a bit more info and we'll see how we can help ;-)