ThanksBurngate wrote:I'm sure you didn't mean it, but it seems three of the switches at the right connect the power rails to ground!
I've taken the liberty of cutting the important bit:
ThanksBurngate wrote:Switches in general don't have dedicated positive and negative ends - they're just bits of bent metal that touch when you press it, so either way round is good.
As for the rest, I've just written a 50-page document explaining in detail the whys and wherefores about connecting a switch to the Pi.
But since it's been done before, better than I can do, I've deleted it.
So go to http://www.themagpi.com/ and read all about it.