blower motor is on the right side of the heater core assembly.. i.e. if you look to the left of the pedals, you will see a motor like case (black with tiny vents) .. it has 3 screws/nuts -- which can be taken off to get the hands on the blower motor. Make sure you disconnect its power.
If you want to service/clean your ducts and the whole heater core assembly, you may take off the dashboard -- it has 3 screws/nuts near windscreen. Two each on driver and passenger leg side panels. and 2 or 3 screws with the metal support bar under cigarette lighter point.
For dashboard removal you will also have to take out the speedometer (i.e. instruments cluster), audio/video player and connections of duct/fan controls.