(so I've started to record my own original material, and I'd like some advice regarding my questions before I invest some money in it)

-I've done some recordings with my iPod's built-in mic, if I wanted to keep this up, would purchasing a 'blue mikey' microphone plug-in be a good decision?
-And would transferring my recordings through my iPod to the computer be a relatively easy recording task (overdubs and all)/ good decision?

your thoughts and advice on this?