Where do I find my private key on a blockchain.info wallet?
It's pretty simple mate . Once you login to your Blockchain.info account , head to "Import/Export" which is near "Receive Money" tab . Once you are there are there choose between options that you want either "Export Uncrypted" or "Export Encrypted" . If you choosed Uncrypted then select the format "Base58 , base64 , Bitcoin-Qt format etc ..." and you will see it changing on the textbox below , so just copy it from there .
~ Madness