I incorporated my consulting business in March of this year. I decided to take the advice of other business professionals and seek help instead of Googling and doing it myself. You may be tempted to only spend $100-200 to form a corp on the Internet, but I recommend that you get an accountant, review your financial situation (now and future), then seek a lawyer to form the corp.
Utilizing the help of other professionals isn't cheap, but they have the expertise in their respective fields so you can focus on yours. There are some fields on those incorporation forms that may have an impact on your taxes and revenues - thus some consultation will help. Keep in mind that you'll need to setup payroll and file your State and Federal taxes and respective forms. I believe in spending my time earning money and with my family, thus I pay my CPA to handle that stuff. Others may not mind sitting down and doing it themselves. Ask youself: are you an accountant or a computer professional?
My attorney specializes in forming corps for businesses - his fee was $900 and all I had to do was sign some paperwork. I've spent more money on my accountant and at $200/hour he's not cheap. I live in Los Angeles where it seems our CPAs charge much more than other parts of the US.
Good luck in your journey. Oh, I formed a S Corp.