For the throttle body, its a butteryfly valve. Where your stock intake box is, follow the air tube to a metal circular device. This is the throttle body. You can unattach the intake tube from it by unscrewing the clamp holding it with a flathead.
To clean the throttle all you need is carb cleaner and a small towel. Spray a little on the towel and wipe down the inside. You may need to use your other hand to open the butterfly valve to clean the other side.
The MAF sensor is screwed into the intake tubing. From your stock airbox, follow the intake tube. On the side facing you, you should see a wire screwed into the intake tube. Unscrew it and take it out. It should look like a flat metal sensor that is maybe an inch or two long. Clean this as well.
Probably clean the maf sensor first in case you plan on using the same towel for the throttle body. Last thing you need to do is gunk up the maf sensor