You don't need damsels to cycle a tank; live rock, a piece of dead shrimp, even some flake food will get the cycle going. Hard on the damsels during the cycle, they often die and way too hard on the tank owner trying to get the darn things out after!
nmreefbeginner, it is best to wait several months before adding much to the tank. It is very hard to wait, but it will pay off in healthier livestock and a more stable tank. Some people say that a fish or two should go in before the corals, to both feed the tank and ramp up its' ability to process waste. Some people say corals should be first. And some people don't want fish at all.
Whichever way you go, just go slowly, adding things one or two at a time to let the tank (and your wallet!) catch up. Research the animals you want for compatibility with each other and yor tank set up.
FWIW, mushrooms, zoanthids and a
colt coral were the first additions in my tank followed in a couple of weeks by a bi-color blenny.
Alice