the star looks like a burgundy=good
the only corals that i know what are is that gorgonian (reddish stick looking one) can be hard depending on what kinds it is, they need pretty fast flow and lots of feedings of phytoplankton..
the one with the little tiny fluffy things on top in the second to last picture looks like a toadstool, pretty easy
the corals will eventually attach themselves.. when depends on a lot of things...
the fish i will guess is in the very center of the pic, can't id though