if you have never done it before mate i would suggest you get a mechanics creeper so you can move under the car easily, also a good set of goggles as shit gets in your eyes(only got one pair so look after em)
blowtorch would help to remove stubborn stuff. i found a wire wheel in the end of a drill is good, also get the car as high as (safeley) possible

you can get stonechip from halfrauds or any good car shop.
hth. cheers mark.