How to get a title up on the website

I have just started to try and list a property - its a Shepherd's Hut and the only thing I am being offered is Tent!  Which isn't quite the same thing.  I have one picture up and can't find where to enter any further details about the property.  I have some experience of this sort of stuff but I find this website really difficult.  It is probably easy when you know how!  They are also taking the postal town as the location and that is a good ten miles away!  

I would be very grateful for some enlightenment as to how to change and add a decent description.  Thank you