There are a lot of considerations to be included in your question. Foremost is a liquor license.
If you want personal one-on-one help writing a business plan and you live in the United States, you should find your local Small Business Development Center (SBDC), Business Resource Center or SCORE office to get advice on where to begin. You can check the list on Bplans.com (http://www.bplans.com/business_planning_resources/sbdc/ or http://www.bplans.com/business_planning_resources/score/). Your local Chamber of Commerce office should be able to provide some resources as well.