All of them. That's what an employee is :-) You can find services to do most of these things too. However, all of these things eat into your profit margin.

All of them. That's what an employee is :-) You can find services to do most of these things too. However, all of these things eat into your profit margin. If you don't actually want to run a small business, probably the better idea is to invest your capital in somebody else's business.