Upgradng an Iphone 4 to 5 help needed?

I have just bought an iphone 5 and already have an iphone 4. I would like to sell the iphone 4 so I know I should do a factory reset but do I have to 'sign out' of it or anything and if so how.
To set up the 5 do I simply sign in again with my icloud account details.
Help really needed please.
Will pick the best answer

Best call Apple care for technical support or you could sign up for a Genious Bar appointment and select your nearest Apple retail store you'd like to visit and the available allocated time/day.

You need to use your Apple ID for Genious Bar reservation.

https://www.apple.com/...geniusbar/

Hope that helps.

So instead of googling it you asked a question here? Shows the extend of your IQ

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