Your goal over time is to use less red ink every day.
The real thing you do is you ask a lot of questions.
Create tools that enable people to make decisions at the same level, ideally, of fidelity that that you would make them yourself.
You really need to spend a lot of your time focussing people.
Some people can't learn to play the guitar by reading a book. You have to actually try to manage a bit and you won't do well at first.
The team you build is the company you build.