The slider is built into the home page template. If you’d like to use it on the home page, edit the home page and look in the right hand column for a box labeled attributes. In that box there is a drop-down menu for templates. Choose the home page one there and that will trigger the slideshow to appear.
Or you can use a plugin for your slideshow. There are lots of good plugins for slideshows like Soliloquy or Meta Slider that will let you insert a slider into the content of a page. You could use one of those if you’d rather not use the theme’s home page template.
If you have any trouble or questions, let me know.