There is a lot of info out here, and most of is honest good advice for that person's situation and setup...That said, remember fish of the same type, size, whatever can still differ from tank to tank...this house is warm and that house is cold makes a difference, my fish may eat this, yours may not, blah blah blah...keep notes from your experiences. Some corals love natural sunlight, but so does algae...algae is bad, but algae is very good for keeping phosphates at bay, and it is natural food for Tangs, Angels, Foxface, and many other fish...so everything bad may not be bad for you, and all that's said to be good may not be good for you.
