Thanks to everyone for all the informative responses 
Have to wait for my cables/wires/ties(?) to arrive from eBay. First lot are a week overdue so ordered 2 more lots from different sellers (hopefully one lot will arrive soon)
Finding out lots about my Uno, like on-board 3.3V and analog pins can be used as digital 
Quick question - can I switch the on-board 3.3V with the pins? Or will this cause some sort of short circuit?
I played with the Blink example to make it blink four times then wait 2 seconds just to get my hands dirty