To start your own business and make money on the Internet, your friend must first figure out what exactly you want to do. As I understand it, you want to do business (buying and selling), for this you just need to order your website store from the programmers and go ahead. But the problem is that you will have more competitors than stars in the sky, so the promotion of your business will require a lot of effort and nerves...

Good afternoon. you were rightly noted that you need to understand what exactly your friend wants to do and only then look for a suitable company in the area in which he would like to do it .. I would start with researching the market and companies. because at the moment there are a lot of companies creating applications.

There are many developers of both applications and software on the Internet and you need to choose one of them if you are looking for it in Google or you can just follow this link https://www.softformance.com/technologies/python-development/ and everything will be decided there your problems are the best specialists in this field. Everything is simple and affordable.