Since most small business owners need the cash from profits to live on, the vast majority of them are set up as S-corporations.    If you are setting up a company to be owned just by you alone and you expect to have a loss the first year or two in business (which is very common, especially after depreciating equipment and furniture) then you may want to form a LLC and register it with the IRS as a sole proprietorship for tax purposes (although you will still get the limited liability advantages by forming an LLC).  Then when you start to make a profit, you can switch the LLC status to an S-corp. status to cut your self-employment tax.   Many states charge more for annual renewal of the LLC, so if you expect to have a profit from the first year or if you will have other owners in the business, then the corporation would probably be a better choice for you.

Incidentally, our incorporation kits include all the forms you need to form the company with your state, be accepted to do business in other states (if you choose this option),  "fill in the blanks" suggested minutes for the required initial meetings to properly organize your company, all federal and state tax registrations, the S-election form (and for LLCs the Entity Election form), and related instructions.  We also provide something nobody else does at this low price.  We've included registration for all federal and state sales, payroll, and other business taxes plus exemption forms, payroll posters, and every other tax-related form you need to get started!  Its like getting all the startup help of both a CPA and attorney at a very low cost!