I may sound like a newb for asking this, but what exactly does it do? As far as I know, it collides hadrons, and it's large.
Haha, that's about the whole of it
They've got two seperate rings around the 26km accelerator, and each one will have protons going around at almost the speed of light.
One ring goes one way, one goes the other ...
And there's 4 'colliding chambers' around the LHC, such as ATLAS, and in those chambers, the two rings cross eachother, and well ... that's where the action happens
There's incredible cameras in each chamber, and basically they're just going to look at what comes out of the collisions, and hope to find the Higgs Boson, and maybe evidence for higher dimensions and whatever else they're looking for
Hope i've helped