Sharon, you need a 2" drain, shower pan, and mortar base. There are some magazine articles and sites that may have than info but it is a difficult job installing the pan and it is a special drain that has to be installed just right.
The question you asked was in such a way to suggest to me that your construction experience is limited. (Forgive me if I'm wrong). I suggest paying a plumber and/or experience shower tile layer to lay out the drain and the job then decide if and what parts of the job you can do. Maybe get 3 bids.
If you have never done this before, I would let a plumber install the drain pipe, the pan, the mortar, and the drain. You could probably do the tile but if you have never tiled before, a shower is a tough place to start even for people with other construction experience. Good luck.