Higgs 101. This is a few years old, but still good.
The official Press Release: CERN experiments observe particle consistent with long-sought Higgs boson
Does 5-sigma = discovery? [Yes]. What all those sigmas mean, and the difference between random and systematic error. Also see The Higgs Boson – Certainly, certainly (?) there! (at least, I am pretty certain it is).
There should be a Nobel Prize out of this, but who should get it? This is a non-trivial problem. On the Higgs row and Nobel reform