If you are new you should really not be casting at all, instead start by studying the basics before expanding your knowledge.
Generally spells won't work until you know at least the basic information.
This is generally made up of: meditation, centring, grounding, visualisation and learning what is real from fake.
There are many forums on this site that are good, but I would recommend looking at "Starting Out" and "the basics expanded" they cover a great deal of information and can be found by using the sites search bar.
Why is it that you want to remove the ghost?
If you want to you could cleanse the house to remove negative energies but that is a personal choice.