Coral Questions (begnner)

[VDHD]

I just started keeping Corals after having a FOLR for over a year.. Anyways, Coraline is good, calcium levels are good, alk is good, tank is clean and cycled.. I bought two corals today - a toadstool leather and a frogspawn bubble coral (I think that's what it's called) - How long do they take to open normally?

What do you guys do to "stick" the corals to the rock??