I have been running a product based company without investment based entirely on sales. I put in my own money to buy a small supply, sold it based on direct sa

I have been running a product based company without investment based entirely on sales. I put in my own money to buy a small supply, sold it based on direct sales. Used the profit to buy more supply and get basic marketing material printed, sold that next supply. Improved my packaging/printed marketing material/got a website built etc. It has been slower but this is my first proper business so it means that I am learning fast, maintaining control and proving myself. I would recommend this way to anyone that isnt doing a "next big thing" project. It keeps you on the cutting edge of customer feedback.