Krak,
MRSA is Methicillin-Resistant Staphlyococcus Aureus or "staph" which was first found in a hosptial setting. It has since spread to the general population as CA-MRSA which is Community Acquired MRSA.
Most (all??) of us live with staph in our bodies all the time. It's found in the nose among other places. Oftentimes it is a simple skin infection, but if it gets into the blood, it can go systemic which is BAD.
It is a bacterial infection which if you want to think positively, I'd guess being bacterial rather than viral is a good thing
It is normally spread skin-to-skin, but can also be spread indirectly. It looks like pimples on the skin.
I have a friend here at school who chronically gets staph infections. She has scars all over her body from having to get the infections cut out. It's not exactly exciting stuff.
I know that if anything I have posted here is wrong, somebody will correct me.