Hello and please help identify

[bigjohn]

Hi,

My girlfriend bought an orchid last week from a garden centre here in the UK. Unfortunately the card doesn't say what it is. It's sort of helpful in that it says to water once a week, feed once a month and not to eat it

It's not like here other one which sits in a pot of bark and I think is one of those that grows on trees. This one is in finer, almost compost like soil.

I'd like to know if that's best for it and if the instructions are correct. Any other advice on looking after it gratefully received. We know very little. Thanks!