The first thing you will want to have in mind, is a location where are you going to make money! Some good spot are street corners with a lot of pedestrians. Another place to rake in the cash is the local flea market, if you can get a spot.
Step2
Next, get the proper vending license, health certificates and inspections from local authority that have jurisdiction in the area you are going to sell your food products. Check with the local licenses and inspections office, they will give you the procedures for that area.
Step3
Have a place to run your business, a home kitchen with stainless steel sinks, freezers and utensils or a convulsure ( commercial company that allows you space to prepare your food) Make your menu, stock just enough product to make the money you plan on making back.
Step4
Start the work day early, sells always starts out slow in the beginning, people have to learn your location, hang in there it business will pick up.
Step5
Remember to invest the money you make back into the business, repeat the process until you build a big enough clientele to make a profit and expand. Good luck!