C-Corp: Is it a good idea for a offshore web startup?

Hello.

I am from Chile. I want to start a company that receives money from Apple (selling apps worldwide) and pays a % of the sales to people worldwide (through PayPal). I receive a % of the sales.

I am considering to start a C-Corp in Delaware to do this. Reasons:

- To open a US bank/merchant account - Closer to Apple (no bank transfer fees, currency exchanges, etc) - I can raise VC money

I have been reading YC looking for answers, but now I have more questions! (that's a good sign)

(0) Is it a good idea to incorporate in the US/Delaware?

(1) Do I have to register in every state (I will sell apps and pay people in all the states)

(2) What taxes do I have to pay?

(3) Is it possible to manage a US corp from abroad?

(4) Is there any good book about web startups and taxes etc?

Thank you very much. Your answers will be extremely helpful.