Don't try to run a business straight away focus on doing what you do as well as you can do and the business will begin to build itself
A business is not tax vat staff etc etc that is like saying window cleaning is about the van the ladders the soap no window cleaning is knocking doors asking and gettting the payment you want and doing it as best you can then as you start to earn an income you will naturally progress to "running a business"
If you do want to read a book you can't beat the E-Myth
Gordon