First, I'd recommend you buy a manual, because the water pump is internally mounted, driven by the timing belt. You will also need a puller to remove the crankshaft pulley. You can usually rent/borrow this from the same place you bought the manual. The manual will also show you how to properly install the timing belt and compress the tensioner.
You will need to drain the cooling system, raise the car (safely), remove the right tire, right inner fender, right engine mount (aka front mount), accessory drive belts, timing belt cover, timing belt and tensioner (which needs to be recompressed correctly), and now you are at the water pump. Since the timing belt has to be removed, you should also replace it.
You will need to drain the cooling system, raise the car (safely), remove the right tire, right inner fender, right engine mount (aka front mount), accessory drive belts, timing belt cover, timing belt and tensioner (which needs to be recompressed correctly), and now you are at the water pump. Since the timing belt has to be removed, you should also replace it.