How much money will you need to get started?
How long will it take to get your first client?
How much can you charge? How much do you need to charge?
How long is it going to take to become profitable?
Are you going to have to spend weekends at your desk?
Will the market buy what you are selling (or will you spend a lot of time producing products but hardly sell at all?)
What about running a business, dealing with the tax office, company structures, superannuation and payroll?
How in heaven's name do you sell and market?
You have no experience in this!