If you're starting any other kind of business it's a little over kill.
Generally registering an LLC, applying for a business license and then requesting a Tax ID number from the IRS is really all you need for a web based business of 1 person.
what is it for " a web based business"?
In order to legally do business and report on your taxes (in washington state for example) you need to register your entity as a business with the state -- in the form of a business license.
I only used the phrase "web based business" assuming you have no physical property (retail) or employees which add additional licensing requirements and more complexity.
Unless there's something not mentioned in the OP, he doesn't need a board, he doesn't need shares, he doesn't have a partner. He needs a disregarded entity.
They offer services for incorporation too. Never used them so cannot speak about their service level. Seems to be a preferred choice for some YC startups. Then of course there is LegalZoom. They are around since 2001.