They are fairly easy and pretty hardy. They can be temperamental and stay closed at times. Mine will close for up to a week or more when they shed. Just mentioning that because folks not familiar with them tend to worry when that happens. They need to be attached to a rock that they will grow on. If you buy one it should be attached to some type of rock. They can not be glued like coral but need to be allowed to grow on the rock. Some people use rubber bands or fishing string to secure them to the rock untill they attach. Mine like a lot of light and flow but I've seen them kept in lower light and flow as well. These are two of my 3. The third is being temperamental today :winking-face:
Just throwing this out there since you said you were new. I've had good luck with Sinularia which is another type of leather and have been pretty easy and hardy. Mine love high flow and light. I find high flow caused them to grow big thick stalks which I prefer over long and skinny.
These are my two Sinularia,one neon green and a plain one.