The mad scientist must have drunk one of his special potions again and may not be much help right now.
You can eat anything raw, as long as your body is detox'd enough to deal with anything living in it. If you are unsure, then it is best to wait until you have cleansed your system for a while by green juicing and eating raw meats from cow, which is the least risky. Then once you are a little bit more confident mentally, and healthy physically, then try the foods that are typically considered more risky. I regularly eat raw pig heart from pastured pig and have come to no harm, quite the opposite. But 4 years ago when I started, I would only eat cow and lamb raw.
You can freeze it for about as long as you like, certain foods will freezer burn faster than others but there is no point where it's inedible, only less palatable. Similarly you can eat it no matter how rotten it gets, it's actually easier to digest when rotten, but the flavor is obviously much stronger and may not be palatable to you unless you have a strong constitution.
No special prep neccessary, can be eaten as is from store. Make sure you read the newbie section if you haven't so you know what to look for in raw animal foods. Seafood must be wildcaught, land animals either wild or pastured (more accurately they should be eating as closely to their natural diet as possible). No farmed fish, no conventional or confinement animals.
