Read the discaimer and if you agree to all of the points mentioned there, proceed the construction, following the order as stated on the navigation bar on your left.
I strongly recomend the reading of the whole document contained on this site before you start, since this will show important notes for the electronics newbie, notes on the hardware/sofware combo and details on how to build the interface sucessfully. So read it all and further more, investigate.
good luck!