You don’t need lawyers or accountants for what you’re talking about.
Set up a sole proprietorship. How you do so varies state to state. And, you don’t need a book or a person who charges fees to help you do it, unless you’re too dumb to even figure out how to register at a message board, which you’re clearly not.
You pay taxes just like it’s income tax. You deduct those things that are justifiable business expenses. Your businesses’ debts and liabilities are your debts and liabilities. You don’t need to do anything if/when your business dissolves.
Every self-employed artist I know (and I know a lot of them, including my wife) who has a small business does sole proprietorship. Once they get big, they might move into the realm of a Limited Liability Corporation.
Anyway – as to the other parts of your question. . .well, what’s your idea, your plan?
I gotta admit, I’m not really getting your passion for either business or the art of photography out of this. . .
Do you want to sell framed prints at art shows?
To get into galleries?
Do you think you’ll just put your photos up on a web page, and people will pay you hundreds of dollars to get your prints after googling “photography”?
Anyway, my wife started her jewelry business about 8 years ago. She probably lost money the first couple years, started breaking even, and has grown at a decent rate ever since. She gets into better shows. She’s been doing online business. But, it’s been slow & steady, and was initially financed by my steady job.
She is very active in the running of her business (shipping, receiving, marketing, pricing, accounting) as well the fabrication & design side. And, you need to do both well to be successful.
It’s a very nice thing to be able to start something like that from scratch and have it truly be your own. But, don’t quit your day job right now.