You need to know how to do the accounting, advertisement, how to buy food, how to hire a chef and supervise waiters, etc. It is a business where it margin for profit is quite small and the workload is grueling. Here are a couple of articles to read:

http://www.associatedcontent.com/article/73643/failure_rate_of_restaurants_privately_pg2.html?cat=3

http://www.restaurantowner.com/public/302.cfm

http://www.businessweek.com/smallbiz/content/apr2007/sb20070416_296932.htm

You have to have a buffer of money because you will have a huge outgo before you make that first cent. Plus everything from spoons to electricity to pay for.

I’d advise you to read everything you can on the field. The more you know the better prepared you will be. My suggestion is to get a job and learn as many of the jobs in a restaurant as you can. As the owner/manager, you may have to bus tables one night and cook the next.

For fun (and as a shortcut) watch BBC America’s (British Broadcasting Channel) show Restaurant Wars, Chef Ramsay’s F Word, and Hell’s Kitchen on Fox. You might be able to watch reruns on line.

As to classes: anything on small business because that might just be what could cause you to go out of business and anything on cooking the type of food you want to serve. You can go online and check out restaurant management. Lots of schools, lots of sites with information.

You will have to meet health codes for the building and for the equipment and for the food and employees. Look them up for your area.

You will probably spend as much time on administration as you do in the restaurant while it is open.

Look over the independent restaurants in your area and check out the failure rate.
References :
http://www.bls.gov/oco/oco1006.htm#prep Look up the food related jobs on this site for education, etc. because you will need to know hat your employees have to know.