Tank Entry

A friend of mine just brought me a crap load of coral rubble home from Aruba. I was just wondering how do I treat it so I can add it to my tank, or if I can at all. I have been looking up adding coral rubble on the internet and it seems everyone has a different opinion on the matter. What do you think I should do? I was just going to boil a couple of pieces and incorporate the pieces very slowly on a weekly basis.