If you got it today.. just let it do its thing. It'll probably continue to move around for a week or more to find its sweet spot. You're going to have to continue to move coral around to keep them from touching (anemones move faster than you'd think!). They will deflate, look shriveled up, inflate, look beautiful etc. Let it move to where it likes to be, once it finds a spot that it stays in for a day or so and starts to inflate thats the key to give it some chopped up shrimp or squid etc (frozen, slightly warm water to thaw, chop up in decent sized chunks) Feed them like every 3-4 days. Once they find out that they are getting food at the spot that they are they'll likely want to stay there.. unless the light isnt hitting them hard enough.
Light is another issue, people will argue which is more important.. light or feeding.. just do both correctly and that way you dont have to get involved in that argument yourself
Post your tank size and what kinda lights/wattage they're putting out.
They have a symbyotic (spelling!) algae that grows within them that... we'll say 'feeds' them in a different way than by mouth which is why light is important (algae likes zee light!). Buy some kent iron and that'll make that algae that much happier. Visit google and type in something like 'anemone care information' or something.. learn lots about these things.. cause im sure that puppy wasnt cheap and you dont wanna go blowing your money on something that died cause you just werent correctly informed =c(
