1. Get over the company-name thing.
Many people agonize endlessly over dreaming up the perfect company name. Don't. If you're waiting until you come up with the perfect name, you're also waiting to start making money.
Instead, at least for now, forget branding and unique selling propositions and all the business-identity stuff. And don't worry about finding the perfect URL or website design or promotional literature. You're putting those carts way before your business horse, too.
Just pick a name so you can get the administrative ball rolling.
Remember, your business can operate under a different name than your company name. (A "doing business as" form takes minutes to complete.) And you can change your company name later, if you like.
2. Get your Employer Identification number (EIN).
An EIN is the federal tax number used to identify your business. You don't need an EIN unless you will have employees or plan to form a partnership, LLC, or corporation.
But even if you don't need an EIN, get one anyway: It's free, takes minutes, and you can keep your Social Security number private and reduce the chance of identity theft, because if you don't have an EIN, your SSN identifies your business for tax purposes.
Note: If you're using an online legal service to set up an LLC or corporation, don't use it to get your EIN. Instead, apply online at the IRS website. You'll have your EIN in minutes.
Now it's time to head to your locality's administrative offices.
3. Register your trade name.
If you won't operate under your own name, your locality may require you to register a trade name. In most cases, you'll get approved on the spot.
4. Get your business license.
Your county or city will require a business license. The form takes minutes to fill out. Use your EIN instead of your Social Security number to identify your business (for privacy reasons if nothing else).
You may be asked to estimate annual gross receipts. Do your best to estimate accurately, but don't agonize over it. You're just providing an estimate.
5. Complete a business personal-property tax form (if necessary).
Businesses are taxed on "personal" property, just like individuals. Where I live, no form is required for the year the business is established.
If you are required to file a business personal-property tax form and you plan to work from home using computers, tools, etc., that you already own, you won't need to list those items.