As Joules says, there are many threads on here about how to go about feeding a raw diet. Definately do your research, as there are several different models out there... (depending on whether you want to feed veg, and if so, how much)
The Britbarf yahoo group is a great resource, as there are members on there who feed a variety of different raw diets.
Personally I feed Honey the Whole Prey Model diet - I don't feed any fruit/veg and no supplements. I started out feeding a small amount of veg, but there was no change to her wellbeing when I stopped...

With the whole prey model you look to feed meat, bones and glandular offal in an 80/10/10 ratio - for us this works out as a meaty bone or tinned fish for one meal, and a muscle meat or liver or tinned fish for the other.
Variety over the course of time is what you are looking for, so it doesn't matter if you don't get the 80/10/10 in one day, as long as this is what is acheived over time. I wouldn't recommend feeding 2 boney meals in a day, though, as the bone can firm them up a lot and you don't want to end up with a constipated dog.
It is generally advised to introduce each new meat source gradually - we started with chicken, then tripe, then pork, then lamb (we introduced this too quickly in hindsight, as she got a really upset tum and was sensitive to lamb for months afterwards... she's fine now, though) - about one a week. Only when a good variety of meat is being given would I start with offal (liver or kidney) - and introduce this very gradually, as it can loosen a dog up a LOT!!! About half of the offal content should be liver, as this is full of important B vitamins - we only feed liver as the offal as Honey is a fussy little dog who won't touch any kidneys!!!
To give you an idea, we feed Chicken Wings, Pork Ribs, Lamb Ribs (and other bones) and occasional Beef Ribs/Ox-tail or the odd bit of rabbit when we can get it for bone meals, and minced tripe, lamb heart, beef heart or any beef mince we have leftover for muscle meat.
As for amounts, you should aim to feed 2-3% of your dogs adult weight (ideal weight if they are overweight) over the 2 meals...
