Ask HN: Need info on how to start building iPhone accessories

Hi, I am a software guy. I know almost nothing about hardware. I mean I don't know how to build a circuit board which ICs to put in. I have seen that there are few iPhone accessories that are not there in the market and if I can bring in those then that can become a big business. Could you please point me in the direction that I should start-with like any vendors or individuals you know that can help me in this. I don't have huge money to approach Foxconn (pun intended)