[logn]

For a C-corp you'd be in over your head trying to meet all the requirements to stay legal. And it's totally not needed unless you have investors. An LLC in your home state is easy and probably about $100. But it's also not needed unless you expect substantial income--because the only way to actually limit liability is to separate personal finances from business. Probably with an LLC you'd end up filing a tax return where you merge business income into your personal income, so there's not really a tax reason then.

In summary, if spending $100 is no sweat, sure get an LLC.

--not a lawyer--