I realise I'm probably a bit late to this party, that the difficulty has gone up and will continue to give up, but I've decided to give this ago, on the premise of a bit of fun and not take it too seriously.
I can see that the major choice any new person has to make it whether to invest in ASCI chips or GPU's, if bitcoin's ever fall over, then those chips are all but worthless, I can't believe the hardware business that has comeout of this, i.e butterfly labs, at least with GPU's, you can sell them on. But for power consumption and practicality reasons, I've decided to take a stab at an inexpensive USB stick.
A PS4 would certainly be a first great goal.