what are all the steps??
i know i have to rent a commercial kitchen, but what else???
when you rent a commercial kitchen, you are then a buisness correct? and you can advertise or not?
any certificates of any kind??
We have no idea where you are located so it is impossible to answer your questions without further information. I understand if you don't want to say where you are, and in that case your best answers will probably come from your local department of health, department of agriculture, and any local government business entities.
Here's a long read on what's necessary: