Hire a lawyer to create a limited liability company and create form documents.
Hire an accountant to set up everything necessary for the business AND educate you about record keeping, receipts, tax deductions, expenses and asset depreciation.
Next, get liability insurance for $1 million.
Have fun!
This sounds crazy but not far from the truth. With all the regulations I just do it during season if possible. I do some work for a few individual but not much. Mostly beaver work here.