Books to read, people to consult, or general advice - Starting a Small Business

Quick summary: My wife is a teacher. I was a teacher, but I didn't like it, so I quit. I'm a very talented and experienced guitar player and I decided to focus on being a musician.

I went from having no paycheck to in 4 months being on track to make $30k/year, and there's a lot of room for growth. I perform and teach, but the bulk of my money goes to teaching.

The goal is for my wife to eventually quit teaching and get a part time job (or be a stay-at-home mom) and have me be responsible for the family income. Our budget says I would have to make $65k/year to make this possible, but I would definitely push for more money.

Now to the questions -

I'm basically starting a small business. Right now, I'm more of a freelance artist who teaches on the side. What books should I read to help me understand the nuances of owning a small business? How can I get the most out of deductions and adjustments for taxes? Since I am not employed by a corporation or other large entity, how can I make sure I'm not stuck paying a full $514/month for healthcare?

I know the healthcare one is a difficult one, but I'm just putting it out there to see if anyone knows anything.

I'm not asking for a person here to give me the rundown, but if you know of any books or a type of person I can go speak to, I'd love to hear it.

Thanks.