You can always talk to small business owners where you live and they can probably offer you advice. Just make sure you talk to at least 3 so you can get a few perspectives on it. Good luck!

You could also just start selling your product or service and the rest of the stuff will come in time

It really depends on which state you live in. It varies slightly from state to state. You will get a bunch of mail for your new business when you register, and many of them say things like “You HAVE to have this or that” but no. I’ve had 3 different LLCs and they only thing you have to do is file taxes for them or your LLC can be unregistered.