This is quite a nice personal introduction to BARF.
You can spend a lot of time on google sifting through information about the diet and (what I found initially quite frustrating) was that everyone does it a bit differently.
I've been doing it a few months now and I realise that people do it differently to suit the needs of their dog - similar to how you would feed your dc, and I like that one-size doesn't fit all aspect.
If you do a search here on mn then there are several threads where (mostly minimu) explains the bare bones [pun] of the diet...but yes you do just feed raw meat and bones
. 1-2% of your dog's body weight per day, but once you get into the swing of it you do it all by sight and modify depending on exercise levels, number of training treats used in a day etc.
I also feed quite a lot of green tripe which comes in frozen bags - the first link I gave you it a site which will supply all your raw food needs, chicken mince, about one tin of pilchards in tomato sauce a week (probably the most expensive part of her diet), raw eggs shell and all. Some of the meat bit (10%) should be organy bits (heart, liver kidneys etc)
I also add in every now and then a little pot of veg that I've whizzed up in the blender. Pumpkin, swede, appples, carrots, cabbage, whatever. I put it in little pots in the freezer and dump one in with the mince or tripe. Plenty of barf feeders don't do the veg thing at all though.
I get all my RMBs (raw meaty bones) free from my new butcher. It took quite a while trailing through the butchers in town to find one but now I get as many chicken carcasses and wings for free as I can carry 
You can spread out what your dog gets over the week so they don't HAVE to have a bit of liver every day. Same as humans really, we don't eat everything we need to survive at every single meal just spread out over time.
There are some companies out there that will do a whole barf diet in a pouch for you. When I first started out I went with this crowd. Not cheap but it eased me into barf, like an old lady getting into a swimming pool.
hth