Majeed, you may be unfamiliar with what a curry base is - no shame in that if you're a beginner. A base is the "body" of the curry. It's not a complete curry in itself, nor should it be used without being reduced on a high heat until thicker.
Check out some of the recipes in the sub categories such as madras, vindaloo, house specials, etc. All have a similar format. You start with oil, fry garlic and ginger, spices and tomato paste then add the curry base and reduce it to thicken. So the base you've made is just one component in a finished dish.
I do agree with Mr Onions though, this recipe is far from "state of the art".