How to get 2007 Honda cbr600rr running after it's been sitting for a year?

Im wanting to buy a 2007 cbr600rr that's been sitting for a year or so, I was wondering what I need to do to get it running. I know it was running before it started sitting. It's been sitting outside the entire time,.The tank doesn't have a cap and is very rusty, it's also missing a battery, would I be able to use a car battery to test it? Any help is greatly appreciated.